1144663264 has 24 divisors (see below), whose sum is σ = 2351538000. Its totient is φ = 547447296.

The previous prime is 1144663259. The next prime is 1144663277. The reversal of 1144663264 is 4623664411.

It is a super-2 number, since 2×1144663264² = 2620507975902267392, which contains 22 as substring.

It is a congruent number.

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, 776889 + ... + 778360.

It is an arithmetic number, because the mean of its divisors is an integer number (97980750).

Almost surely, 2^1144663264 is an apocalyptic number.

It is an amenable number.

1144663264 is an abundant number, since it is smaller than the sum of its proper divisors (1206874736).

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

1144663264 is a wasteful number, since it uses less digits than its factorization.

1144663264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555282 (or 1555274 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 1144663264 is about 33832.8725354499. The cubic root of 1144663264 is about 1046.0663897212.

The spelling of 1144663264 in words is "one billion, one hundred forty-four million, six hundred sixty-three thousand, two hundred sixty-four".