1318931371392 has 32 divisors (see below), whose sum is σ = 3503411456280. Its totient is φ = 439643790336.

The previous prime is 1318931371367. The next prime is 1318931371397. The reversal of 1318931371392 is 2931731398131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318931371397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1717358173 + ... + 1717358940.

Almost surely, 2^{1318931371392} is an apocalyptic number.

1318931371392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1318931371392 is an abundant number, since it is smaller than the sum of its proper divisors (2184480084888).

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

1318931371392 is an equidigital number, since it uses as much as digits as its factorization.

1318931371392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434717130 (or 3434717118 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The spelling of 1318931371392 in words is "one trillion, three hundred eighteen billion, nine hundred thirty-one million, three hundred seventy-one thousand, three hundred ninety-two".