158165730 has 32 divisors (see below), whose sum is σ = 421776000. Its totient is φ = 42177456.

The previous prime is 158165719. The next prime is 158165743. The reversal of 158165730 is 37561851.

158165730 is a `hidden beast` number, since 1 + 5 + 81 + 6 + 573 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292630 + ... + 293169.

It is an arithmetic number, because the mean of its divisors is an integer number (13180500).

Almost surely, 2^158165730 is an apocalyptic number.

158165730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158165730 is an abundant number, since it is smaller than the sum of its proper divisors (263610270).

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

158165730 is a wasteful number, since it uses less digits than its factorization.

158165730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585815 (or 585809 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 158165730 is about 12576.3957475900. The cubic root of 158165730 is about 540.8009718400.

The spelling of 158165730 in words is "one hundred fifty-eight million, one hundred sixty-five thousand, seven hundred thirty".