189074138 has 16 divisors (see below), whose sum is σ = 315978624. Its totient is φ = 84113760.

The previous prime is 189074131. The next prime is 189074143. The reversal of 189074138 is 831470981.

It is a junction number, because it is equal to n+sod(n) for n = 189074095 and 189074104.

It is not an unprimeable number, because it can be changed into a prime (189074131) 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, 90395 + ... + 92462.

It is an arithmetic number, because the mean of its divisors is an integer number (19748664).

Almost surely, 2^189074138 is an apocalyptic number.

189074138 is a deficient number, since it is larger than the sum of its proper divisors (126904486).

189074138 is a wasteful number, since it uses less digits than its factorization.

189074138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182917.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 189074138 is about 13750.4231934875. The cubic root of 189074138 is about 573.9543825313.

The spelling of 189074138 in words is "one hundred eighty-nine million, seventy-four thousand, one hundred thirty-eight".