1311847492 has 12 divisors (see below), whose sum is σ = 2296158480. Its totient is φ = 655802216.

The previous prime is 1311847463. The next prime is 1311847513. The reversal of 1311847492 is 2947481131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3442 + ... + 51337.

It is an arithmetic number, because the mean of its divisors is an integer number (191346540).

Almost surely, 2^1311847492 is an apocalyptic number.

It is an amenable number.

1311847492 is a deficient number, since it is larger than the sum of its proper divisors (984310988).

1311847492 is a wasteful number, since it uses less digits than its factorization.

1311847492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60770 (or 60768 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 1311847492 is about 36219.4352799709. The cubic root of 1311847492 is about 1094.6983154502.

The spelling of 1311847492 in words is "one billion, three hundred eleven million, eight hundred forty-seven thousand, four hundred ninety-two".