158136804 has 72 divisors (see below), whose sum is σ = 459496128. Its totient is φ = 44919360.

The previous prime is 158136793. The next prime is 158136841. The reversal of 158136804 is 408631851.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43879 + ... + 47345.

Almost surely, 2^158136804 is an apocalyptic number.

158136804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158136804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229748064).

158136804 is an abundant number, since it is smaller than the sum of its proper divisors (301359324).

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

158136804 is a wasteful number, since it uses less digits than its factorization.

158136804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665 (or 3660 counting only the distinct ones).

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

The square root of 158136804 is about 12575.2456834847. The cubic root of 158136804 is about 540.7680018604.

The spelling of 158136804 in words is "one hundred fifty-eight million, one hundred thirty-six thousand, eight hundred four".