1318252992 has 224 divisors, whose sum is σ = 4178442240. Its totient is φ = 358932480.

The previous prime is 1318252979. The next prime is 1318253063. The reversal of 1318252992 is 2992528131.

It is a tau number, because it is divible by the number of its divisors (224).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 2589634 + ... + 2590142.

It is an arithmetic number, because the mean of its divisors is an integer number (18653760).

Almost surely, 2^1318252992 is an apocalyptic number.

1318252992 is a gapful number since it is divisible by the number (12) 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 1318252992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089221120).

1318252992 is an abundant number, since it is smaller than the sum of its proper divisors (2860189248).

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

1318252992 is a wasteful number, since it uses less digits than its factorization.

1318252992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 609 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1318252992 is about 36307.7538826075. The cubic root of 1318252992 is about 1096.4771573922.

The spelling of 1318252992 in words is "one billion, three hundred eighteen million, two hundred fifty-two thousand, nine hundred ninety-two".