1440915216 has 80 divisors (see below), whose sum is σ = 4138068480. Its totient is φ = 429050880.

The previous prime is 1440915211. The next prime is 1440915227. The reversal of 1440915216 is 6125190441.

It is not an unprimeable number, because it can be changed into a prime (1440915211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17901 + ... + 56588.

It is an arithmetic number, because the mean of its divisors is an integer number (51725856).

Almost surely, 2^1440915216 is an apocalyptic number.

1440915216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1440915216 is an abundant number, since it is smaller than the sum of its proper divisors (2697153264).

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

1440915216 is a wasteful number, since it uses less digits than its factorization.

1440915216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74544 (or 74538 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1440915216 is about 37959.3890361792. The cubic root of 1440915216 is about 1129.4824204444.

The spelling of 1440915216 in words is "one billion, four hundred forty million, nine hundred fifteen thousand, two hundred sixteen".