1440664512 has 112 divisors (see below), whose sum is σ = 4585655040. Its totient is φ = 389947392.

The previous prime is 1440664483. The next prime is 1440664529. The reversal of 1440664512 is 2154660441.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1440664512² = 4151028472272396288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2673 + ... + 53744.

Almost surely, 2^1440664512 is an apocalyptic number.

1440664512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440664512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2292827520).

1440664512 is an abundant number, since it is smaller than the sum of its proper divisors (3144990528).

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

1440664512 is a wasteful number, since it uses less digits than its factorization.

1440664512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56458 (or 56448 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1440664512 is about 37956.0866265214. The cubic root of 1440664512 is about 1129.4169106485.

The spelling of 1440664512 in words is "one billion, four hundred forty million, six hundred sixty-four thousand, five hundred twelve".