166789164 has 48 divisors (see below), whose sum is σ = 396829440. Its totient is φ = 54513600.

The previous prime is 166789141. The next prime is 166789171. The reversal of 166789164 is 461987661.

It is a happy number.

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, 149842 + ... + 150950.

It is an arithmetic number, because the mean of its divisors is an integer number (8267280).

Almost surely, 2^166789164 is an apocalyptic number.

It is an amenable number.

166789164 is an abundant number, since it is smaller than the sum of its proper divisors (230040276).

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

166789164 is a wasteful number, since it uses less digits than its factorization.

166789164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1348 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 166789164 is about 12914.6879172514. The cubic root of 166789164 is about 550.4560008919.

The spelling of 166789164 in words is "one hundred sixty-six million, seven hundred eighty-nine thousand, one hundred sixty-four".