166113738 has 48 divisors (see below), whose sum is σ = 412304256. Its totient is φ = 47348640.

The previous prime is 166113721. The next prime is 166113743. The reversal of 166113738 is 837311661.

166113738 is a `hidden beast` number, since 1 + 6 + 611 + 3 + 7 + 38 = 666.

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, 62068 + ... + 64688.

It is an arithmetic number, because the mean of its divisors is an integer number (8589672).

Almost surely, 2^166113738 is an apocalyptic number.

166113738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166113738 is an abundant number, since it is smaller than the sum of its proper divisors (246190518).

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

166113738 is a wasteful number, since it uses less digits than its factorization.

166113738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3136 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 166113738 is about 12888.5118613438. The cubic root of 166113738 is about 549.7119571632.

The spelling of 166113738 in words is "one hundred sixty-six million, one hundred thirteen thousand, seven hundred thirty-eight".