1440137264 has 20 divisors (see below), whose sum is σ = 2794638840. Its totient is φ = 718940160.

The previous prime is 1440137263. The next prime is 1440137297. The reversal of 1440137264 is 4627310441.

It is a super-2 number, since 2×1440137264² = 4147990678322811392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1440137264.

It is not an unprimeable number, because it can be changed into a prime (1440137263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 59954 + ... + 80465.

It is an arithmetic number, because the mean of its divisors is an integer number (139731942).

Almost surely, 2^1440137264 is an apocalyptic number.

It is an amenable number.

1440137264 is a deficient number, since it is larger than the sum of its proper divisors (1354501576).

1440137264 is a wasteful number, since it uses less digits than its factorization.

1440137264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141068 (or 141062 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1440137264 is about 37949.1404909255. The cubic root of 1440137264 is about 1129.2791141754.

The spelling of 1440137264 in words is "one billion, four hundred forty million, one hundred thirty-seven thousand, two hundred sixty-four".