166361964 has 24 divisors (see below), whose sum is σ = 388463040. Its totient is φ = 55413264.

The previous prime is 166361941. The next prime is 166361981. The reversal of 166361964 is 469163661.

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, 15147 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (16185960).

Almost surely, 2^166361964 is an apocalyptic number.

It is an amenable number.

166361964 is an abundant number, since it is smaller than the sum of its proper divisors (222101076).

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

166361964 is a wasteful number, since it uses less digits than its factorization.

166361964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10189 (or 10187 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 166361964 is about 12898.1380051541. The cubic root of 166361964 is about 549.9856348865.

The spelling of 166361964 in words is "one hundred sixty-six million, three hundred sixty-one thousand, nine hundred sixty-four".