1538274792 has 32 divisors (see below), whose sum is σ = 3856420800. Its totient is φ = 511327104.

The previous prime is 1538274779. The next prime is 1538274823. The reversal of 1538274792 is 2974728351.

It is a happy number.

1538274792 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80653 + ... + 97884.

It is an arithmetic number, because the mean of its divisors is an integer number (120513150).

Almost surely, 2^1538274792 is an apocalyptic number.

1538274792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1538274792 is an abundant number, since it is smaller than the sum of its proper divisors (2318146008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1538274792 is a wasteful number, since it uses less digits than its factorization.

1538274792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178905 (or 178901 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 1538274792 is about 39220.8463957625. The cubic root of 1538274792 is about 1154.3689617151.

The spelling of 1538274792 in words is "one billion, five hundred thirty-eight million, two hundred seventy-four thousand, seven hundred ninety-two".