1440115648 has 28 divisors (see below), whose sum is σ = 2893913440. Its totient is φ = 710940672.

The previous prime is 1440115609. The next prime is 1440115661. The reversal of 1440115648 is 8465110441.

It is a happy number.

It is a super-3 number, since 3×1440115648³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 137361 + ... + 147472.

Almost surely, 2^1440115648 is an apocalyptic number.

It is an amenable number.

1440115648 is an abundant number, since it is smaller than the sum of its proper divisors (1453797792).

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

1440115648 is an equidigital number, since it uses as much as digits as its factorization.

1440115648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284924 (or 284914 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1440115648 is about 37948.8556876225. The cubic root of 1440115648 is about 1129.2734641076.

The spelling of 1440115648 in words is "one billion, four hundred forty million, one hundred fifteen thousand, six hundred forty-eight".