115091649 has 18 divisors (see below), whose sum is σ = 176601750. Its totient is φ = 72212736.

The previous prime is 115091629. The next prime is 115091653. The reversal of 115091649 is 946190511.

115091649 is a `hidden beast` number, since 1 + 1 + 5 + 0 + 9 + 1 + 649 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13727025 + 101364624 = 3705^2 + 10068^2 .

It is not a de Polignac number, because 115091649 - 2⁵ = 115091617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115091629) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19524 + ... + 24725.

Almost surely, 2^115091649 is an apocalyptic number.

It is an amenable number.

115091649 is a deficient number, since it is larger than the sum of its proper divisors (61510101).

115091649 is a wasteful number, since it uses less digits than its factorization.

115091649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44289 (or 44269 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 115091649 is about 10728.0776003905. The cubic root of 115091649 is about 486.4235625655.

The spelling of 115091649 in words is "one hundred fifteen million, ninety-one thousand, six hundred forty-nine".