1318696357 has 12 divisors (see below), whose sum is σ = 1465774380. Its totient is φ = 1185335360.

The previous prime is 1318696319. The next prime is 1318696403. The reversal of 1318696357 is 7536968131.

It can be written as a sum of positive squares in 2 ways, for example, as 432681601 + 886014756 = 20801^2 + 29766^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1318696357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318696357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318699357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50458 + ... + 71995.

It is an arithmetic number, because the mean of its divisors is an integer number (122147865).

Almost surely, 2^1318696357 is an apocalyptic number.

It is an amenable number.

1318696357 is a deficient number, since it is larger than the sum of its proper divisors (147078023).

1318696357 is a wasteful number, since it uses less digits than its factorization.

1318696357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122564 (or 122553 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 1318696357 is about 36313.8590210404. The cubic root of 1318696357 is about 1096.6000688281.

The spelling of 1318696357 in words is "one billion, three hundred eighteen million, six hundred ninety-six thousand, three hundred fifty-seven".