166431452 has 12 divisors (see below), whose sum is σ = 317732856. Its totient is φ = 75650640.

The previous prime is 166431443. The next prime is 166431497. The reversal of 166431452 is 254134661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891223 + ... + 1891310.

It is an arithmetic number, because the mean of its divisors is an integer number (26477738).

Almost surely, 2^166431452 is an apocalyptic number.

It is an amenable number.

166431452 is a deficient number, since it is larger than the sum of its proper divisors (151301404).

166431452 is a wasteful number, since it uses less digits than its factorization.

166431452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782548 (or 3782546 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 166431452 is about 12900.8314460735. The cubic root of 166431452 is about 550.0621990263.

The spelling of 166431452 in words is "one hundred sixty-six million, four hundred thirty-one thousand, four hundred fifty-two".