1373772613 has 2 divisors, whose sum is σ = 1373772614. Its totient is φ = 1373772612.

The previous prime is 1373772607. The next prime is 1373772689. The reversal of 1373772613 is 3162773731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061260929 + 312511684 = 32577^2 + 17678^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373772613 - 2⁵ = 1373772581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1373779613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686886306 + 686886307.

It is an arithmetic number, because the mean of its divisors is an integer number (686886307).

Almost surely, 2^1373772613 is an apocalyptic number.

It is an amenable number.

1373772613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373772613 is an equidigital number, since it uses as much as digits as its factorization.

1373772613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 40.

The square root of 1373772613 is about 37064.4386575596. The cubic root of 1373772613 is about 1111.6590759674.

The spelling of 1373772613 in words is "one billion, three hundred seventy-three million, seven hundred seventy-two thousand, six hundred thirteen".