1318713751 has 4 divisors (see below), whose sum is σ = 1321938400. Its totient is φ = 1315489104.

The previous prime is 1318713731. The next prime is 1318713757. The reversal of 1318713751 is 1573178131.

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

It is a cyclic number.

It is not a de Polignac number, because 1318713751 - 2¹⁵ = 1318680983 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 1318713751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318713757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611711 + ... + 1612528.

It is an arithmetic number, because the mean of its divisors is an integer number (330484600).

Almost surely, 2^1318713751 is an apocalyptic number.

1318713751 is a deficient number, since it is larger than the sum of its proper divisors (3224649).

1318713751 is an equidigital number, since it uses as much as digits as its factorization.

1318713751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224648.

The product of its digits is 17640, while the sum is 37.

The square root of 1318713751 is about 36314.0985155903. The cubic root of 1318713751 is about 1096.6048903014.

The spelling of 1318713751 in words is "one billion, three hundred eighteen million, seven hundred thirteen thousand, seven hundred fifty-one".