158043618 has 12 divisors (see below), whose sum is σ = 342427878. Its totient is φ = 52681200.

The previous prime is 158043617. The next prime is 158043727. The reversal of 158043618 is 816340851.

It can be written as a sum of positive squares in only one way, i.e., 114126489 + 43917129 = 10683^2 + 6627^2 .

It is not an unprimeable number, because it can be changed into a prime (158043617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4390083 + ... + 4390118.

Almost surely, 2^158043618 is an apocalyptic number.

158043618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

158043618 is an abundant number, since it is smaller than the sum of its proper divisors (184384260).

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

158043618 is a wasteful number, since it uses less digits than its factorization.

158043618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780209 (or 8780206 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 158043618 is about 12571.5400011295. The cubic root of 158043618 is about 540.6617607088.

The spelling of 158043618 in words is "one hundred fifty-eight million, forty-three thousand, six hundred eighteen".