158165920 has 48 divisors (see below), whose sum is σ = 407641248. Its totient is φ = 57514240.

The previous prime is 158165897. The next prime is 158165921. The reversal of 158165920 is 29561851.

158165920 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 158165920.

It is not an unprimeable number, because it can be changed into a prime (158165921) 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, 43174 + ... + 46693.

It is an arithmetic number, because the mean of its divisors is an integer number (8492526).

Almost surely, 2^158165920 is an apocalyptic number.

158165920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158165920 is an abundant number, since it is smaller than the sum of its proper divisors (249475328).

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

158165920 is a wasteful number, since it uses less digits than its factorization.

158165920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89893 (or 89885 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 158165920 is about 12576.4033014213. The cubic root of 158165920 is about 540.8011883895.

It can be divided in two parts, 15816 and 5920, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 158165920 in words is "one hundred fifty-eight million, one hundred sixty-five thousand, nine hundred twenty".