157865858 has 16 divisors (see below), whose sum is σ = 243098880. Its totient is φ = 76860576.

The previous prime is 157865839. The next prime is 157865861. The reversal of 157865858 is 858568751.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4691 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (15193680).

Almost surely, 2^157865858 is an apocalyptic number.

157865858 is a deficient number, since it is larger than the sum of its proper divisors (85233022).

157865858 is a wasteful number, since it uses less digits than its factorization.

157865858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13841.

The product of its digits is 2688000, while the sum is 53.

The square root of 157865858 is about 12564.4680746938. The cubic root of 157865858 is about 540.4589810565.

The spelling of 157865858 in words is "one hundred fifty-seven million, eight hundred sixty-five thousand, eight hundred fifty-eight".