1518485031972 has 72 divisors (see below), whose sum is σ = 3960300445920. Its totient is φ = 490263569280.

The previous prime is 1518485031919. The next prime is 1518485032003. The reversal of 1518485031972 is 2791305848151.

1518485031972 is a `hidden beast` number, since 1 + 5 + 1 + 8 + 48 + 503 + 1 + 97 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3495498 + ... + 3905825.

It is an arithmetic number, because the mean of its divisors is an integer number (55004172860).

Almost surely, 2^{1518485031972} is an apocalyptic number.

1518485031972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1518485031972 is an abundant number, since it is smaller than the sum of its proper divisors (2441815413948).

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

1518485031972 is a wasteful number, since it uses less digits than its factorization.

1518485031972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401513 (or 7401508 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 1518485031972 in words is "one trillion, five hundred eighteen billion, four hundred eighty-five million, thirty-one thousand, nine hundred seventy-two".