1161942993 has 12 divisors (see below), whose sum is σ = 1719298308. Its totient is φ = 755735040.

The previous prime is 1161942989. The next prime is 1161942997. The reversal of 1161942993 is 3992491611.

1161942993 is a `hidden beast` number, since 1 + 1 + 619 + 4 + 29 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1161942989) and next prime (1161942997).

It can be written as a sum of positive squares in 2 ways, for example, as 223562304 + 938380689 = 14952^2 + 30633^2 .

It is not a de Polignac number, because 1161942993 - 2² = 1161942989 is a prime.

It is a super-2 number, since 2×1161942993² = 2700223037963596098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161942997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1574080 + ... + 1574817.

It is an arithmetic number, because the mean of its divisors is an integer number (143274859).

Almost surely, 2^1161942993 is an apocalyptic number.

It is an amenable number.

1161942993 is a deficient number, since it is larger than the sum of its proper divisors (557355315).

1161942993 is a wasteful number, since it uses less digits than its factorization.

1161942993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148944 (or 3148941 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 1161942993 is about 34087.2849168132. The cubic root of 1161942993 is about 1051.3038957910.

The spelling of 1161942993 in words is "one billion, one hundred sixty-one million, nine hundred forty-two thousand, nine hundred ninety-three".