166134990 has 48 divisors (see below), whose sum is σ = 463825872. Its totient is φ = 37973376.

The previous prime is 166134977. The next prime is 166135027. The reversal of 166134990 is 99431661.

166134990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55039 + ... + 57978.

It is an arithmetic number, because the mean of its divisors is an integer number (9663039).

Almost surely, 2^166134990 is an apocalyptic number.

166134990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166134990 is an abundant number, since it is smaller than the sum of its proper divisors (297690882).

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

166134990 is a wasteful number, since it uses less digits than its factorization.

166134990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113041 (or 113034 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 166134990 is about 12889.3362901276. The cubic root of 166134990 is about 549.7353988935.

The spelling of 166134990 in words is "one hundred sixty-six million, one hundred thirty-four thousand, nine hundred ninety".