1372885361 has 2 divisors, whose sum is σ = 1372885362. Its totient is φ = 1372885360.

The previous prime is 1372885307. The next prime is 1372885373. The reversal of 1372885361 is 1635882731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353136225 + 19749136 = 36785^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372885361 - 2²⁶ = 1305776497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372885301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686442680 + 686442681.

It is an arithmetic number, because the mean of its divisors is an integer number (686442681).

Almost surely, 2^1372885361 is an apocalyptic number.

It is an amenable number.

1372885361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372885361 is an equidigital number, since it uses as much as digits as its factorization.

1372885361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 1372885361 is about 37052.4676776055. The cubic root of 1372885361 is about 1111.4197024970.

The spelling of 1372885361 in words is "one billion, three hundred seventy-two million, eight hundred eighty-five thousand, three hundred sixty-one".