1375431772 has 48 divisors (see below), whose sum is σ = 2833223904. Its totient is φ = 576000000.

The previous prime is 1375431769. The next prime is 1375431787. The reversal of 1375431772 is 2771345731.

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, 341772 + ... + 345772.

It is an arithmetic number, because the mean of its divisors is an integer number (59025498).

Almost surely, 2^1375431772 is an apocalyptic number.

It is an amenable number.

1375431772 is an abundant number, since it is smaller than the sum of its proper divisors (1457792132).

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

1375431772 is a wasteful number, since it uses less digits than its factorization.

1375431772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 4628 counting only the distinct ones).

The product of its digits is 123480, while the sum is 40.

The square root of 1375431772 is about 37086.8139909591. The cubic root of 1375431772 is about 1112.1064273256.

The spelling of 1375431772 in words is "one billion, three hundred seventy-five million, four hundred thirty-one thousand, seven hundred seventy-two".