1318628863 has 4 divisors (see below), whose sum is σ = 1322612968. Its totient is φ = 1314644760.

The previous prime is 1318628833. The next prime is 1318628867. The reversal of 1318628863 is 3688268131.

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 1318628863 - 2²⁵ = 1285074431 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 (1318628867) 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, 1991556 + ... + 1992217.

It is an arithmetic number, because the mean of its divisors is an integer number (330653242).

Almost surely, 2^1318628863 is an apocalyptic number.

1318628863 is a deficient number, since it is larger than the sum of its proper divisors (3984105).

1318628863 is an equidigital number, since it uses as much as digits as its factorization.

1318628863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984104.

The product of its digits is 331776, while the sum is 46.

The square root of 1318628863 is about 36312.9296945317. The cubic root of 1318628863 is about 1096.5813596468.

The spelling of 1318628863 in words is "one billion, three hundred eighteen million, six hundred twenty-eight thousand, eight hundred sixty-three".