1318380780 has 48 divisors (see below), whose sum is σ = 3693602304. Its totient is φ = 351364800.

The previous prime is 1318380779. The next prime is 1318380823. The reversal of 1318380780 is 870838131.

1318380780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118455 + ... + 129105.

It is an arithmetic number, because the mean of its divisors is an integer number (76950048).

Almost surely, 2^1318380780 is an apocalyptic number.

1318380780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318380780 is an abundant number, since it is smaller than the sum of its proper divisors (2375221524).

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

1318380780 is a wasteful number, since it uses less digits than its factorization.

1318380780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12726 (or 12724 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1318380780 is about 36309.5136293506. The cubic root of 1318380780 is about 1096.5125861242.

The spelling of 1318380780 in words is "one billion, three hundred eighteen million, three hundred eighty thousand, seven hundred eighty".