192791139 has 16 divisors (see below), whose sum is σ = 265749504. Its totient is φ = 124192800.

The previous prime is 192791117. The next prime is 192791147. The reversal of 192791139 is 931197291.

It is not a de Polignac number, because 192791139 - 2⁵ = 192791107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 192791139.

It is not an unprimeable number, because it can be changed into a prime (192791149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86412 + ... + 88614.

It is an arithmetic number, because the mean of its divisors is an integer number (16609344).

Almost surely, 2^192791139 is an apocalyptic number.

192791139 is a deficient number, since it is larger than the sum of its proper divisors (72958365).

192791139 is a wasteful number, since it uses less digits than its factorization.

192791139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178.

The product of its digits is 30618, while the sum is 42.

The square root of 192791139 is about 13884.9248827640. The cubic root of 192791139 is about 577.6911171951.

The spelling of 192791139 in words is "one hundred ninety-two million, seven hundred ninety-one thousand, one hundred thirty-nine".