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1109995993 = 4127073073
BaseRepresentation
bin100001000101001…
…0011000111011001
32212100122122020201
41002022103013121
54233124332433
6302051022201
736335544631
oct10212230731
92770578221
101109995993
1151a622467
1226b89a961
13148c70782
14a75c16c1
15676aca7d
hex422931d9

1109995993 has 4 divisors (see below), whose sum is σ = 1137069108. Its totient is φ = 1082922880.

The previous prime is 1109995987. The next prime is 1109996029. The reversal of 1109995993 is 3995999011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3995999011 = 15725452223.

It can be written as a sum of positive squares in 2 ways, for example, as 277788889 + 832207104 = 16667^2 + 28848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109995993 - 25 = 1109995961 is a prime.

It is a super-2 number, since 2×11099959932 = 2464182208952112098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109995963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13536496 + ... + 13536577.

It is an arithmetic number, because the mean of its divisors is an integer number (284267277).

Almost surely, 21109995993 is an apocalyptic number.

It is an amenable number.

1109995993 is a deficient number, since it is larger than the sum of its proper divisors (27073115).

1109995993 is an equidigital number, since it uses as much as digits as its factorization.

1109995993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27073114.

The product of its (nonzero) digits is 885735, while the sum is 55.

The square root of 1109995993 is about 33316.6023627860. The cubic root of 1109995993 is about 1035.3975595481.

The spelling of 1109995993 in words is "one billion, one hundred nine million, nine hundred ninety-five thousand, nine hundred ninety-three".

Divisors: 1 41 27073073 1109995993