1372745731 has 24 divisors (see below), whose sum is σ = 1669326624. Its totient is φ = 1123436160.

The previous prime is 1372745719. The next prime is 1372745741. The reversal of 1372745731 is 1375472731.

It is not a de Polignac number, because 1372745731 - 2⁹ = 1372745219 is a prime.

It is a super-2 number, since 2×1372745731² = 3768861683957448722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1372745741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1150071 + ... + 1151263.

It is an arithmetic number, because the mean of its divisors is an integer number (69555276).

Almost surely, 2^1372745731 is an apocalyptic number.

1372745731 is a deficient number, since it is larger than the sum of its proper divisors (296580893).

1372745731 is a wasteful number, since it uses less digits than its factorization.

1372745731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251 (or 2244 counting only the distinct ones).

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

The square root of 1372745731 is about 37050.5834097116. The cubic root of 1372745731 is about 1111.3820220519.

The spelling of 1372745731 in words is "one billion, three hundred seventy-two million, seven hundred forty-five thousand, seven hundred thirty-one".