189166131 has 32 divisors (see below), whose sum is σ = 349401600. Its totient is φ = 98267040.

The previous prime is 189166111. The next prime is 189166139. The reversal of 189166131 is 131661981.

It is a happy number.

189166131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189166131 - 2⁶ = 189166067 is a prime.

It is a super-2 number, since 2×189166131² = 71567650235018322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189166139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43416 + ... + 47573.

It is an arithmetic number, because the mean of its divisors is an integer number (10918800).

Almost surely, 2^189166131 is an apocalyptic number.

189166131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189166131 is a deficient number, since it is larger than the sum of its proper divisors (160235469).

189166131 is a wasteful number, since it uses less digits than its factorization.

189166131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91016 (or 91010 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 189166131 is about 13753.7678837473. The cubic root of 189166131 is about 574.0474522398.

The spelling of 189166131 in words is "one hundred eighty-nine million, one hundred sixty-six thousand, one hundred thirty-one".