85158918 has 32 divisors (see below), whose sum is σ = 203800800. Its totient is φ = 26202528.

The previous prime is 85158907. The next prime is 85158923. The reversal of 85158918 is 81985158.

85158918 is a `hidden beast` number, since 8 + 51 + 589 + 18 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59953 + ... + 61356.

It is an arithmetic number, because the mean of its divisors is an integer number (6368775).

Almost surely, 2^85158918 is an apocalyptic number.

85158918 is an abundant number, since it is smaller than the sum of its proper divisors (118641882).

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

85158918 is a wasteful number, since it uses less digits than its factorization.

85158918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121333 (or 121327 counting only the distinct ones).

The product of its digits is 115200, while the sum is 45.

The square root of 85158918 is about 9228.1589713225. The cubic root of 85158918 is about 439.9568104990.

The spelling of 85158918 in words is "eighty-five million, one hundred fifty-eight thousand, nine hundred eighteen".