166124889 has 24 divisors (see below), whose sum is σ = 276911232. Its totient is φ = 94003200.

The previous prime is 166124887. The next prime is 166124891. The reversal of 166124889 is 988421661.

166124889 is a `hidden beast` number, since 166 + 1 + 2 + 488 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (166124887) and next prime (166124891).

It is not a de Polignac number, because 166124889 - 2¹ = 166124887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166124887) 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 23 ways as a sum of consecutive naturals, for example, 6312 + ... + 19289.

It is an arithmetic number, because the mean of its divisors is an integer number (11537968).

Almost surely, 2^166124889 is an apocalyptic number.

It is an amenable number.

166124889 is a deficient number, since it is larger than the sum of its proper divisors (110786343).

166124889 is a wasteful number, since it uses less digits than its factorization.

166124889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25717 (or 25714 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 166124889 is about 12888.9444486350. The cubic root of 166124889 is about 549.7242573718.

The spelling of 166124889 in words is "one hundred sixty-six million, one hundred twenty-four thousand, eight hundred eighty-nine".