1373315609 has 2 divisors, whose sum is σ = 1373315610. Its totient is φ = 1373315608.

The previous prime is 1373315543. The next prime is 1373315633. The reversal of 1373315609 is 9065133731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009459984 + 363855625 = 31772^2 + 19075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373315609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373315659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686657804 + 686657805.

It is an arithmetic number, because the mean of its divisors is an integer number (686657805).

Almost surely, 2^1373315609 is an apocalyptic number.

It is an amenable number.

1373315609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373315609 is an equidigital number, since it uses as much as digits as its factorization.

1373315609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 1373315609 is about 37058.2731518888. The cubic root of 1373315609 is about 1111.5357928310.

The spelling of 1373315609 in words is "one billion, three hundred seventy-three million, three hundred fifteen thousand, six hundred nine".