1318413880 has 128 divisors (see below), whose sum is σ = 3522170880. Its totient is φ = 434626560.

The previous prime is 1318413853. The next prime is 1318413893. The reversal of 1318413880 is 883148131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674847 + ... + 1675633.

It is an arithmetic number, because the mean of its divisors is an integer number (27516960).

Almost surely, 2^1318413880 is an apocalyptic number.

1318413880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318413880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761085440).

1318413880 is an abundant number, since it is smaller than the sum of its proper divisors (2203757000).

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

1318413880 is a wasteful number, since it uses less digits than its factorization.

1318413880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1318413880 is about 36309.9694298962. The cubic root of 1318413880 is about 1096.5217625987.

The spelling of 1318413880 in words is "one billion, three hundred eighteen million, four hundred thirteen thousand, eight hundred eighty".