1239138374 has 16 divisors (see below), whose sum is σ = 1890604800. Its totient is φ = 609012360.

The previous prime is 1239138359. The next prime is 1239138379. The reversal of 1239138374 is 4738319321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239138379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14279 + ... + 51789.

It is an arithmetic number, because the mean of its divisors is an integer number (118162800).

Almost surely, 2^1239138374 is an apocalyptic number.

1239138374 is a deficient number, since it is larger than the sum of its proper divisors (651466426).

1239138374 is a wasteful number, since it uses less digits than its factorization.

1239138374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37795.

The product of its digits is 108864, while the sum is 41.

The square root of 1239138374 is about 35201.3973302197. The cubic root of 1239138374 is about 1074.0881754941.

The spelling of 1239138374 in words is "one billion, two hundred thirty-nine million, one hundred thirty-eight thousand, three hundred seventy-four".