165053730 has 32 divisors (see below), whose sum is σ = 401560704. Its totient is φ = 43410816.

The previous prime is 165053723. The next prime is 165053753. The reversal of 165053730 is 37350561.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 35494 + ... + 39873.

It is an arithmetic number, because the mean of its divisors is an integer number (12548772).

Almost surely, 2^165053730 is an apocalyptic number.

165053730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165053730 is an abundant number, since it is smaller than the sum of its proper divisors (236506974).

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

165053730 is a wasteful number, since it uses less digits than its factorization.

165053730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75450.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 165053730 is about 12847.3238458443. The cubic root of 165053730 is about 548.5401838642.

The spelling of 165053730 in words is "one hundred sixty-five million, fifty-three thousand, seven hundred thirty".