1318860660 has 48 divisors (see below), whose sum is σ = 3976874496. Its totient is φ = 324642432.

The previous prime is 1318860659. The next prime is 1318860679. The reversal of 1318860660 is 660688131.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 844644 + ... + 846203.

It is an arithmetic number, because the mean of its divisors is an integer number (82851552).

Almost surely, 2^1318860660 is an apocalyptic number.

1318860660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318860660 is an abundant number, since it is smaller than the sum of its proper divisors (2658013836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318860660 is a wasteful number, since it uses less digits than its factorization.

1318860660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690872 (or 1690870 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1318860660 is about 36316.1212135878. The cubic root of 1318860660 is about 1096.6456105729.

The spelling of 1318860660 in words is "one billion, three hundred eighteen million, eight hundred sixty thousand, six hundred sixty".