1318367986 has 36 divisors (see below), whose sum is σ = 2272079322. Its totient is φ = 571489152.

The previous prime is 1318367983. The next prime is 1318367987. The reversal of 1318367986 is 6897638131.

It can be written as a sum of positive squares in 3 ways, for example, as 853749961 + 464618025 = 29219^2 + 21555^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318367983) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2752095 + ... + 2752573.

Almost surely, 2^1318367986 is an apocalyptic number.

1318367986 is a deficient number, since it is larger than the sum of its proper divisors (953711336).

1318367986 is an equidigital number, since it uses as much as digits as its factorization.

1318367986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 511 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 1318367986 is about 36309.3374492017. The cubic root of 1318367986 is about 1096.5090391400.

The spelling of 1318367986 in words is "one billion, three hundred eighteen million, three hundred sixty-seven thousand, nine hundred eighty-six".