118897857 has 12 divisors (see below), whose sum is σ = 184952404. Its totient is φ = 73167840.

The previous prime is 118897841. The next prime is 118897861. The reversal of 118897857 is 758798811.

It can be written as a sum of positive squares in 2 ways, for example, as 36433296 + 82464561 = 6036^2 + 9081^2 .

It is not a de Polignac number, because 118897857 - 2⁴ = 118897841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118897817) 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 11 ways as a sum of consecutive naturals, for example, 507994 + ... + 508227.

Almost surely, 2^118897857 is an apocalyptic number.

It is an amenable number.

118897857 is a deficient number, since it is larger than the sum of its proper divisors (66054547).

118897857 is a wasteful number, since it uses less digits than its factorization.

118897857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016240 (or 1016237 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 54.

The square root of 118897857 is about 10904.0293928437. The cubic root of 118897857 is about 491.7277022890.

The spelling of 118897857 in words is "one hundred eighteen million, eight hundred ninety-seven thousand, eight hundred fifty-seven".