165925930 has 16 divisors (see below), whose sum is σ = 299120040. Its totient is φ = 66269632.

The previous prime is 165925927. The next prime is 165925937. The reversal of 165925930 is 39529561.

It is a happy number.

165925930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 162588001 + 3337929 = 12751^2 + 1827^2 .

It is not an unprimeable number, because it can be changed into a prime (165925937) 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, 5485 + ... + 19024.

Almost surely, 2^165925930 is an apocalyptic number.

165925930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165925930 is a deficient number, since it is larger than the sum of its proper divisors (133194110).

165925930 is a wasteful number, since it uses less digits than its factorization.

165925930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25193.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 165925930 is about 12881.2239325306. The cubic root of 165925930 is about 549.5047111386.

It can be divided in two parts, 16592 and 5930, that added together give a palindrome (22522).

The spelling of 165925930 in words is "one hundred sixty-five million, nine hundred twenty-five thousand, nine hundred thirty".