165158730 has 64 divisors (see below), whose sum is σ = 480470400. Its totient is φ = 40037760.

The previous prime is 165158729. The next prime is 165158761. The reversal of 165158730 is 37851561.

165158730 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24835 + ... + 30774.

It is an arithmetic number, because the mean of its divisors is an integer number (7507350).

Almost surely, 2^165158730 is an apocalyptic number.

165158730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165158730 is an abundant number, since it is smaller than the sum of its proper divisors (315311670).

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

165158730 is a wasteful number, since it uses less digits than its factorization.

165158730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55636 (or 55630 counting only the distinct ones).

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

The square root of 165158730 is about 12851.4096503068. The cubic root of 165158730 is about 548.6564783382.

The spelling of 165158730 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, seven hundred thirty".