166445936 has 10 divisors (see below), whose sum is σ = 322489032. Its totient is φ = 83222960.

The previous prime is 166445921. The next prime is 166445953. The reversal of 166445936 is 639544661.

It is a super-2 number, since 2×166445936² = 55408499221832192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201420 + ... + 5201451.

Almost surely, 2^166445936 is an apocalyptic number.

166445936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166445936 is a deficient number, since it is larger than the sum of its proper divisors (156043096).

166445936 is a wasteful number, since it uses less digits than its factorization.

166445936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10402879 (or 10402873 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 166445936 is about 12901.3927930282. The cubic root of 166445936 is about 550.0781552848.

The spelling of 166445936 in words is "one hundred sixty-six million, four hundred forty-five thousand, nine hundred thirty-six".