158157618 has 16 divisors (see below), whose sum is σ = 322284096. Its totient is φ = 51724400.

The previous prime is 158157611. The next prime is 158157631. The reversal of 158157618 is 816751851.

158157618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 158157618.

It is not an unprimeable number, because it can be changed into a prime (158157611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248358 + ... + 248993.

It is an arithmetic number, because the mean of its divisors is an integer number (20142756).

Almost surely, 2^158157618 is an apocalyptic number.

158157618 is an abundant number, since it is smaller than the sum of its proper divisors (164126478).

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

158157618 is a wasteful number, since it uses less digits than its factorization.

158157618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497409.

The product of its digits is 67200, while the sum is 42.

The square root of 158157618 is about 12576.0732345196. The cubic root of 158157618 is about 540.7917261530.

The spelling of 158157618 in words is "one hundred fifty-eight million, one hundred fifty-seven thousand, six hundred eighteen".