165193730 has 64 divisors (see below), whose sum is σ = 333849600. Its totient is φ = 58440960.

The previous prime is 165193723. The next prime is 165193747. The reversal of 165193730 is 37391561.

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, 721256 + ... + 721484.

It is an arithmetic number, because the mean of its divisors is an integer number (5216400).

Almost surely, 2^165193730 is an apocalyptic number.

165193730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165193730 is an abundant number, since it is smaller than the sum of its proper divisors (168655870).

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

165193730 is a wasteful number, since it uses less digits than its factorization.

165193730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 165193730 is about 12852.7712964948. The cubic root of 165193730 is about 548.6952322093.

The spelling of 165193730 in words is "one hundred sixty-five million, one hundred ninety-three thousand, seven hundred thirty".