165667930 has 16 divisors (see below), whose sum is σ = 303829704. Its totient is φ = 65016640.

The previous prime is 165667927. The next prime is 165667951. The reversal of 165667930 is 39766561.

165667930 is digitally balanced in base 3, 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 165559689 + 108241 = 12867^2 + 329^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155761 + ... + 156820.

Almost surely, 2^165667930 is an apocalyptic number.

165667930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165667930 is a deficient number, since it is larger than the sum of its proper divisors (138161774).

165667930 is a wasteful number, since it uses less digits than its factorization.

165667930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312641.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 165667930 is about 12871.2054602512. The cubic root of 165667930 is about 549.2197531455.

The spelling of 165667930 in words is "one hundred sixty-five million, six hundred sixty-seven thousand, nine hundred thirty".