1376318957 has 4 divisors (see below), whose sum is σ = 1482189660. Its totient is φ = 1270448256.

The previous prime is 1376318953. The next prime is 1376318959. The reversal of 1376318957 is 7598136731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 244265641 + 1132053316 = 15629^2 + 33646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376318957 - 2² = 1376318953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376318953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52935332 + ... + 52935357.

It is an arithmetic number, because the mean of its divisors is an integer number (370547415).

Almost surely, 2^1376318957 is an apocalyptic number.

It is an amenable number.

1376318957 is a deficient number, since it is larger than the sum of its proper divisors (105870703).

1376318957 is a wasteful number, since it uses less digits than its factorization.

1376318957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105870702.

The product of its digits is 952560, while the sum is 50.

The square root of 1376318957 is about 37098.7729851002. The cubic root of 1376318957 is about 1112.3454873068.

The spelling of 1376318957 in words is "one billion, three hundred seventy-six million, three hundred eighteen thousand, nine hundred fifty-seven".