1372872381 has 8 divisors (see below), whose sum is σ = 1847604384. Its totient is φ = 906694320.

The previous prime is 1372872377. The next prime is 1372872407. The reversal of 1372872381 is 1832782731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1372872381 - 2² = 1372872377 is a prime.

It is a super-2 number, since 2×1372872381² = 3769557149025218322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372872181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138110 + ... + 2138751.

It is an arithmetic number, because the mean of its divisors is an integer number (230950548).

Almost surely, 2^1372872381 is an apocalyptic number.

It is an amenable number.

1372872381 is a deficient number, since it is larger than the sum of its proper divisors (474732003).

1372872381 is a wasteful number, since it uses less digits than its factorization.

1372872381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276971.

The product of its digits is 112896, while the sum is 42.

The square root of 1372872381 is about 37052.2925201667. The cubic root of 1372872381 is about 1111.4161998319.

The spelling of 1372872381 in words is "one billion, three hundred seventy-two million, eight hundred seventy-two thousand, three hundred eighty-one".