1381972592 has 80 divisors (see below), whose sum is σ = 3595103232. Its totient is φ = 497007360.

The previous prime is 1381972589. The next prime is 1381972621. The reversal of 1381972592 is 2952791831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27128 + ... + 59159.

Almost surely, 2^1381972592 is an apocalyptic number.

It is an amenable number.

1381972592 is an abundant number, since it is smaller than the sum of its proper divisors (2213130640).

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

1381972592 is a wasteful number, since it uses less digits than its factorization.

1381972592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86326 (or 86320 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1381972592 is about 37174.8919568033. The cubic root of 1381972592 is about 1113.8665019716.

The spelling of 1381972592 in words is "one billion, three hundred eighty-one million, nine hundred seventy-two thousand, five hundred ninety-two".