1144664256 has 28 divisors (see below), whose sum is σ = 3028591352. Its totient is φ = 381554688.

The previous prime is 1144664237. The next prime is 1144664293. The reversal of 1144664256 is 6524664411.

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, 2980705 + ... + 2981088.

Almost surely, 2^1144664256 is an apocalyptic number.

1144664256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1144664256 is an abundant number, since it is smaller than the sum of its proper divisors (1883927096).

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

1144664256 is an equidigital number, since it uses as much as digits as its factorization.

1144664256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961808 (or 5961798 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 1144664256 is about 33832.8871957449. The cubic root of 1144664256 is about 1046.0666919055.

The spelling of 1144664256 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, two hundred fifty-six".