1213538948424 has 96 divisors (see below), whose sum is σ = 3593134715040. Its totient is φ = 366951513600.

The previous prime is 1213538948407. The next prime is 1213538948443. The reversal of 1213538948424 is 4248498353121.

It is a happy number.

1213538948424 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 538 + 9 + 4 + 84 + 24 = 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, 1270657 + ... + 2010384.

It is an arithmetic number, because the mean of its divisors is an integer number (37428486615).

Almost surely, 2^{1213538948424} is an apocalyptic number.

It is an amenable number.

1213538948424 is an abundant number, since it is smaller than the sum of its proper divisors (2379595766616).

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

1213538948424 is a wasteful number, since it uses less digits than its factorization.

1213538948424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281531 (or 3281524 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 1213538948424 in words is "one trillion, two hundred thirteen billion, five hundred thirty-eight million, nine hundred forty-eight thousand, four hundred twenty-four".