1318940160 has 160 divisors (see below), whose sum is σ = 4242585600. Its totient is φ = 349544448.

The previous prime is 1318940149. The next prime is 1318940171. The reversal of 1318940160 is 610498131.

It is an interprime number because it is at equal distance from previous prime (1318940149) and next prime (1318940171).

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

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, 1527889 + ... + 1528751.

It is an arithmetic number, because the mean of its divisors is an integer number (26516160).

Almost surely, 2^1318940160 is an apocalyptic number.

1318940160 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 1318940160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121292800).

1318940160 is an abundant number, since it is smaller than the sum of its proper divisors (2923645440).

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

1318940160 is an equidigital number, since it uses as much as digits as its factorization.

1318940160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1318940160 is about 36317.2157523123. The cubic root of 1318940160 is about 1096.6676451408.

The spelling of 1318940160 in words is "one billion, three hundred eighteen million, nine hundred forty thousand, one hundred sixty".