1372860989 has 2 divisors, whose sum is σ = 1372860990. Its totient is φ = 1372860988.

The previous prime is 1372860967. The next prime is 1372861033. The reversal of 1372860989 is 9890682731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1331155225 + 41705764 = 36485^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372860989 - 2²⁸ = 1104425533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1372860989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372860949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686430494 + 686430495.

It is an arithmetic number, because the mean of its divisors is an integer number (686430495).

Almost surely, 2^1372860989 is an apocalyptic number.

It is an amenable number.

1372860989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372860989 is an equidigital number, since it uses as much as digits as its factorization.

1372860989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 1372860989 is about 37052.1387911683. The cubic root of 1372860989 is about 1111.4131256718.

The spelling of 1372860989 in words is "one billion, three hundred seventy-two million, eight hundred sixty thousand, nine hundred eighty-nine".