166151189 has 8 divisors (see below), whose sum is σ = 167629248. Its totient is φ = 164678400.

The previous prime is 166151173. The next prime is 166151213. The reversal of 166151189 is 981151661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166151189 - 2⁴ = 166151173 is a prime.

It is a super-2 number, since 2×166151189² = 55212435212227442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166151159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86174 + ... + 88080.

It is an arithmetic number, because the mean of its divisors is an integer number (20953656).

Almost surely, 2^166151189 is an apocalyptic number.

It is an amenable number.

166151189 is a deficient number, since it is larger than the sum of its proper divisors (1478059).

166151189 is a wasteful number, since it uses less digits than its factorization.

166151189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635.

The product of its digits is 12960, while the sum is 38.

The square root of 166151189 is about 12889.9646624807. The cubic root of 166151189 is about 549.7532656381.

The spelling of 166151189 in words is "one hundred sixty-six million, one hundred fifty-one thousand, one hundred eighty-nine".