1372328861 has 2 divisors, whose sum is σ = 1372328862. Its totient is φ = 1372328860.

The previous prime is 1372328851. The next prime is 1372328887. The reversal of 1372328861 is 1688232731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055275225 + 317053636 = 32485^2 + 17806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372328861 - 2²⁶ = 1305219997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372328851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686164430 + 686164431.

It is an arithmetic number, because the mean of its divisors is an integer number (686164431).

Almost surely, 2^1372328861 is an apocalyptic number.

It is an amenable number.

1372328861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372328861 is an equidigital number, since it uses as much as digits as its factorization.

1372328861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 1372328861 is about 37044.9572951569. The cubic root of 1372328861 is about 1111.2695106283.

The spelling of 1372328861 in words is "one billion, three hundred seventy-two million, three hundred twenty-eight thousand, eight hundred sixty-one".