1109396651850 has 72 divisors (see below), whose sum is σ = 2984210423532. Its totient is φ = 295478668800.

The previous prime is 1109396651849. The next prime is 1109396651879. The reversal of 1109396651850 is 581566939011.

1109396651850 is a `hidden beast` number, since 1 + 10 + 9 + 3 + 9 + 66 + 518 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 76675271409 + 1032721380441 = 276903^2 + 1016229^2 .

It is a super-2 number, since 2×1109396651850² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1131967 + ... + 1870866.

Almost surely, 2^{1109396651850} is an apocalyptic number.

1109396651850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1109396651850 is an abundant number, since it is smaller than the sum of its proper divisors (1874813771682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1109396651850 is a wasteful number, since it uses less digits than its factorization.

1109396651850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003672 (or 3003664 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 1109396651850 in words is "one trillion, one hundred nine billion, three hundred ninety-six million, six hundred fifty-one thousand, eight hundred fifty".