1372335381 has 12 divisors (see below), whose sum is σ = 1983779980. Its totient is φ = 914189760.

The previous prime is 1372335347. The next prime is 1372335383. The reversal of 1372335381 is 1835332731.

It can be written as a sum of positive squares in 2 ways, for example, as 821682225 + 550653156 = 28665^2 + 23466^2 .

It is not a de Polignac number, because 1372335381 - 2⁶ = 1372335317 is a prime.

It is a super-2 number, since 2×1372335381² = 3766608795888830322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372335383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45826 + ... + 69603.

Almost surely, 2^1372335381 is an apocalyptic number.

It is an amenable number.

1372335381 is a deficient number, since it is larger than the sum of its proper divisors (611444599).

1372335381 is a wasteful number, since it uses less digits than its factorization.

1372335381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116756 (or 116753 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 1372335381 is about 37045.0452962336. The cubic root of 1372335381 is about 1111.2712705237.

The spelling of 1372335381 in words is "one billion, three hundred seventy-two million, three hundred thirty-five thousand, three hundred eighty-one".