1144664456 has 16 divisors (see below), whose sum is σ = 2311341900. Its totient is φ = 528306624.

The previous prime is 1144664431. The next prime is 1144664471. The reversal of 1144664456 is 6544664411.

It can be written as a sum of positive squares in 2 ways, for example, as 1125602500 + 19061956 = 33550^2 + 4366^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5503091 + ... + 5503298.

Almost surely, 2^1144664456 is an apocalyptic number.

It is an amenable number.

1144664456 is an abundant number, since it is smaller than the sum of its proper divisors (1166677444).

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

1144664456 is a wasteful number, since it uses less digits than its factorization.

1144664456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006408 (or 11006404 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 1144664456 is about 33832.8901514488. The cubic root of 1144664456 is about 1046.0667528297.

The spelling of 1144664456 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, four hundred fifty-six".