1144631656 has 32 divisors (see below), whose sum is σ = 2454733440. Its totient is φ = 490166208.

The previous prime is 1144631647. The next prime is 1144631671. The reversal of 1144631656 is 6561364411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69445 + ... + 84331.

It is an arithmetic number, because the mean of its divisors is an integer number (76710420).

Almost surely, 2^1144631656 is an apocalyptic number.

It is an amenable number.

1144631656 is an abundant number, since it is smaller than the sum of its proper divisors (1310101784).

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

1144631656 is a wasteful number, since it uses less digits than its factorization.

1144631656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273 (or 16269 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 1144631656 is about 33832.4054125627. The cubic root of 1144631656 is about 1046.0567611630.

The spelling of 1144631656 in words is "one billion, one hundred forty-four million, six hundred thirty-one thousand, six hundred fifty-six".