1440494064 has 80 divisors (see below), whose sum is σ = 4246548640. Its totient is φ = 467182080.

The previous prime is 1440494059. The next prime is 1440494093. The reversal of 1440494064 is 4604940441.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29077 + ... + 61044.

It is an arithmetic number, because the mean of its divisors is an integer number (53081858).

Almost surely, 2^1440494064 is an apocalyptic number.

It is an amenable number.

1440494064 is an abundant number, since it is smaller than the sum of its proper divisors (2806054576).

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

1440494064 is a wasteful number, since it uses less digits than its factorization.

1440494064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90175 (or 90163 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1440494064 is about 37953.8412285239. The cubic root of 1440494064 is about 1129.3723676745.

The spelling of 1440494064 in words is "one billion, four hundred forty million, four hundred ninety-four thousand, sixty-four".