1372815361 has 4 divisors (see below), whose sum is σ = 1372949424. Its totient is φ = 1372681300.

The previous prime is 1372815359. The next prime is 1372815397. The reversal of 1372815361 is 1635182731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1372815361 - 2¹ = 1372815359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372815361.

It is not an unprimeable number, because it can be changed into a prime (1372885361) 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, 50275 + ... + 72616.

It is an arithmetic number, because the mean of its divisors is an integer number (343237356).

Almost surely, 2^1372815361 is an apocalyptic number.

It is an amenable number.

1372815361 is a deficient number, since it is larger than the sum of its proper divisors (134063).

1372815361 is a wasteful number, since it uses less digits than its factorization.

1372815361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134062.

The product of its digits is 30240, while the sum is 37.

The square root of 1372815361 is about 37051.5230591132. The cubic root of 1372815361 is about 1111.4008126699.

The spelling of 1372815361 in words is "one billion, three hundred seventy-two million, eight hundred fifteen thousand, three hundred sixty-one".