1318764807 has 20 divisors (see below), whose sum is σ = 2015826120. Its totient is φ = 858728304.

The previous prime is 1318764803. The next prime is 1318764809. The reversal of 1318764807 is 7084678131.

It is not a de Polignac number, because 1318764807 - 2² = 1318764803 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318764803) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 185832 + ... + 192797.

It is an arithmetic number, because the mean of its divisors is an integer number (100791306).

Almost surely, 2^1318764807 is an apocalyptic number.

1318764807 is a deficient number, since it is larger than the sum of its proper divisors (697061313).

1318764807 is an equidigital number, since it uses as much as digits as its factorization.

1318764807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378684 (or 378675 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1318764807 is about 36314.8014864463. The cubic root of 1318764807 is about 1096.6190423585.

The spelling of 1318764807 in words is "one billion, three hundred eighteen million, seven hundred sixty-four thousand, eight hundred seven".