1440651216 has 40 divisors (see below), whose sum is σ = 3723422400. Its totient is φ = 479992576.

The previous prime is 1440651211. The next prime is 1440651221. The reversal of 1440651216 is 6121560441.

It is an interprime number because it is at equal distance from previous prime (1440651211) and next prime (1440651221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440651211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120685 + ... + 132083.

It is an arithmetic number, because the mean of its divisors is an integer number (93085560).

Almost surely, 2^1440651216 is an apocalyptic number.

1440651216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1440651216 is an abundant number, since it is smaller than the sum of its proper divisors (2282771184).

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

1440651216 is a wasteful number, since it uses less digits than its factorization.

1440651216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043 (or 14037 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1440651216 is about 37955.9114763432. The cubic root of 1440651216 is about 1129.4134361469.

The spelling of 1440651216 in words is "one billion, four hundred forty million, six hundred fifty-one thousand, two hundred sixteen".