118297857 has 16 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 73659600.

The previous prime is 118297831. The next prime is 118297867. The reversal of 118297857 is 758792811.

It is a happy number.

It is not a de Polignac number, because 118297857 - 2¹⁵ = 118265089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118297867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10569 + ... + 18662.

It is an arithmetic number, because the mean of its divisors is an integer number (10523520).

Almost surely, 2^118297857 is an apocalyptic number.

It is an amenable number.

118297857 is a deficient number, since it is larger than the sum of its proper divisors (50078463).

118297857 is a wasteful number, since it uses less digits than its factorization.

118297857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29324.

The product of its digits is 282240, while the sum is 48.

The square root of 118297857 is about 10876.4818300772. The cubic root of 118297857 is about 490.8991639376.

The spelling of 118297857 in words is "one hundred eighteen million, two hundred ninety-seven thousand, eight hundred fifty-seven".