1147798456 has 64 divisors (see below), whose sum is σ = 2488320000. Its totient is φ = 486205440.

The previous prime is 1147798397. The next prime is 1147798499. The reversal of 1147798456 is 6548977411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556120 + ... + 2556568.

It is an arithmetic number, because the mean of its divisors is an integer number (38880000).

Almost surely, 2^1147798456 is an apocalyptic number.

It is an amenable number.

1147798456 is an abundant number, since it is smaller than the sum of its proper divisors (1340521544).

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

1147798456 is a wasteful number, since it uses less digits than its factorization.

1147798456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 888 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 1147798456 is about 33879.1743701053. The cubic root of 1147798456 is about 1047.0205653215.

The spelling of 1147798456 in words is "one billion, one hundred forty-seven million, seven hundred ninety-eight thousand, four hundred fifty-six".