158713812 has 36 divisors (see below), whose sum is σ = 403762996. Its totient is φ = 52565760.

The previous prime is 158713799. The next prime is 158713813. The reversal of 158713812 is 218317851.

It can be written as a sum of positive squares in 2 ways, for example, as 42850116 + 115863696 = 6546^2 + 10764^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158713813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8389 + ... + 19692.

Almost surely, 2^158713812 is an apocalyptic number.

158713812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158713812 is an abundant number, since it is smaller than the sum of its proper divisors (245049184).

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

158713812 is a wasteful number, since it uses less digits than its factorization.

158713812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28248 (or 28243 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 158713812 is about 12598.1670095296. The cubic root of 158713812 is about 541.4249198268.

It can be divided in two parts, 15871 and 3812, that added together give a 9-th power (19683 = 3⁹).

The spelling of 158713812 in words is "one hundred fifty-eight million, seven hundred thirteen thousand, eight hundred twelve".