192881138 has 16 divisors (see below), whose sum is σ = 302690304. Its totient is φ = 92084640.

The previous prime is 192881137. The next prime is 192881147. The reversal of 192881138 is 831188291.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 192881095 and 192881104.

It is not an unprimeable number, because it can be changed into a prime (192881131) 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 7 ways as a sum of consecutive naturals, for example, 21170 + ... + 28877.

It is an arithmetic number, because the mean of its divisors is an integer number (18918144).

Almost surely, 2^192881138 is an apocalyptic number.

192881138 is a deficient number, since it is larger than the sum of its proper divisors (109809166).

192881138 is a wasteful number, since it uses less digits than its factorization.

192881138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50137.

The product of its digits is 27648, while the sum is 41.

The square root of 192881138 is about 13888.1653936004. The cubic root of 192881138 is about 577.7809960400.

The spelling of 192881138 in words is "one hundred ninety-two million, eight hundred eighty-one thousand, one hundred thirty-eight".