1372349887 has 2 divisors, whose sum is σ = 1372349888. Its totient is φ = 1372349886.

The previous prime is 1372349873. The next prime is 1372349893. The reversal of 1372349887 is 7889432731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1372349887 - 2²³ = 1363961279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372349807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686174943 + 686174944.

It is an arithmetic number, because the mean of its divisors is an integer number (686174944).

Almost surely, 2^1372349887 is an apocalyptic number.

1372349887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372349887 is an equidigital number, since it uses as much as digits as its factorization.

1372349887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 1372349887 is about 37045.2410843822. The cubic root of 1372349887 is about 1111.2751860010.

The spelling of 1372349887 in words is "one billion, three hundred seventy-two million, three hundred forty-nine thousand, eight hundred eighty-seven".