189716139 has 12 divisors (see below), whose sum is σ = 274322256. Its totient is φ = 126344592.

The previous prime is 189716117. The next prime is 189716179. The reversal of 189716139 is 931617981.

It is not a de Polignac number, because 189716139 - 2⁷ = 189716011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189716094 and 189716103.

It is not an unprimeable number, because it can be changed into a prime (189716179) 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 11 ways as a sum of consecutive naturals, for example, 1599 + ... + 19544.

It is an arithmetic number, because the mean of its divisors is an integer number (22860188).

Almost surely, 2^189716139 is an apocalyptic number.

189716139 is a deficient number, since it is larger than the sum of its proper divisors (84606117).

189716139 is a wasteful number, since it uses less digits than its factorization.

189716139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22146 (or 22143 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 189716139 is about 13773.7481826843. The cubic root of 189716139 is about 574.6032691170.

The spelling of 189716139 in words is "one hundred eighty-nine million, seven hundred sixteen thousand, one hundred thirty-nine".