192568138 has 12 divisors (see below), whose sum is σ = 336011922. Its totient is φ = 82529160.

The previous prime is 192568127. The next prime is 192568139. The reversal of 192568138 is 831865291.

It can be written as a sum of positive squares in only one way, i.e., 176703849 + 15864289 = 13293^2 + 3983^2 .

It is a junction number, because it is equal to n+sod(n) for n = 192568094 and 192568103.

It is not an unprimeable number, because it can be changed into a prime (192568139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 982393 + ... + 982588.

Almost surely, 2^192568138 is an apocalyptic number.

192568138 is a deficient number, since it is larger than the sum of its proper divisors (143443784).

192568138 is a wasteful number, since it uses less digits than its factorization.

192568138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964997 (or 1964990 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 192568138 is about 13876.8922313319. The cubic root of 192568138 is about 577.4682933312.

The spelling of 192568138 in words is "one hundred ninety-two million, five hundred sixty-eight thousand, one hundred thirty-eight".