1372811444 has 12 divisors (see below), whose sum is σ = 2467350564. Its totient is φ = 667854144.

The previous prime is 1372811443. The next prime is 1372811449. The reversal of 1372811444 is 4441182731.

It can be written as a sum of positive squares in 2 ways, for example, as 1076627344 + 296184100 = 32812^2 + 17210^2 .

It is a super-2 number, since 2×1372811444² = 3769222521554730272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372811443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637729 + ... + 4638024.

It is an arithmetic number, because the mean of its divisors is an integer number (205612547).

Almost surely, 2^1372811444 is an apocalyptic number.

It is an amenable number.

1372811444 is a deficient number, since it is larger than the sum of its proper divisors (1094539120).

1372811444 is a wasteful number, since it uses less digits than its factorization.

1372811444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275794 (or 9275792 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 1372811444 is about 37051.4702002498. The cubic root of 1372811444 is about 1111.3997556302.

The spelling of 1372811444 in words is "one billion, three hundred seventy-two million, eight hundred eleven thousand, four hundred forty-four".