158816920 has 16 divisors (see below), whose sum is σ = 357338160. Its totient is φ = 63526752.

The previous prime is 158816897. The next prime is 158816921. The reversal of 158816920 is 29618851.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 3970423 = 158816920 / (1 + 5 + 8 + 8 + 1 + 6 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158816921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1985172 + ... + 1985251.

It is an arithmetic number, because the mean of its divisors is an integer number (22333635).

Almost surely, 2^158816920 is an apocalyptic number.

158816920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158816920 is an abundant number, since it is smaller than the sum of its proper divisors (198521240).

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

158816920 is a wasteful number, since it uses less digits than its factorization.

158816920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970434 (or 3970430 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 158816920 is about 12602.2585277402. The cubic root of 158816920 is about 541.5421395264.

It can be divided in two parts, 15881 and 6920, that added together give a square (22801 = 151²).

The spelling of 158816920 in words is "one hundred fifty-eight million, eight hundred sixteen thousand, nine hundred twenty".