166112947 has 16 divisors (see below), whose sum is σ = 223034112. Its totient is φ = 119481120.

The previous prime is 166112927. The next prime is 166112951. The reversal of 166112947 is 749211661.

It is not a de Polignac number, because 166112947 - 2⁷ = 166112819 is a prime.

It is a super-2 number, since 2×166112947² = 55187022322049618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166112917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81973 + ... + 83974.

It is an arithmetic number, because the mean of its divisors is an integer number (13939632).

Almost surely, 2^166112947 is an apocalyptic number.

166112947 is a deficient number, since it is larger than the sum of its proper divisors (56921165).

166112947 is a wasteful number, since it uses less digits than its factorization.

166112947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165978.

The product of its digits is 18144, while the sum is 37.

The square root of 166112947 is about 12888.4811750648. The cubic root of 166112947 is about 549.7110846228.

The spelling of 166112947 in words is "one hundred sixty-six million, one hundred twelve thousand, nine hundred forty-seven".