1318645760 has 156 divisors (see below), whose sum is σ = 3318534504. Its totient is φ = 502824960.

The previous prime is 1318645751. The next prime is 1318645763. The reversal of 1318645760 is 675468131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318645763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19681247 + ... + 19681313.

Almost surely, 2^1318645760 is an apocalyptic number.

1318645760 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 1318645760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659267252).

1318645760 is an abundant number, since it is smaller than the sum of its proper divisors (1999888744).

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

1318645760 is an frugal number, since it uses more digits than its factorization.

1318645760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1318645760 is about 36313.1623519627. The cubic root of 1318645760 is about 1096.5860435162.

The spelling of 1318645760 in words is "one billion, three hundred eighteen million, six hundred forty-five thousand, seven hundred sixty".