1440451216 has 20 divisors (see below), whose sum is σ = 2802462124. Its totient is φ = 717235200.

The previous prime is 1440451211. The next prime is 1440451219. The reversal of 1440451216 is 6121540441.

It can be written as a sum of positive squares in 2 ways, for example, as 852873616 + 587577600 = 29204^2 + 24240^2 .

It is not an unprimeable number, because it can be changed into a prime (1440451211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182925 + ... + 190636.

Almost surely, 2^1440451216 is an apocalyptic number.

1440451216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1440451216 is a deficient number, since it is larger than the sum of its proper divisors (1362010908).

1440451216 is a wasteful number, since it uses less digits than its factorization.

1440451216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373810 (or 373804 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1440451216 is about 37953.2767491820. The cubic root of 1440451216 is about 1129.3611697047.

Adding to 1440451216 its reverse (6121540441), we get a palindrome (7561991657).

The spelling of 1440451216 in words is "one billion, four hundred forty million, four hundred fifty-one thousand, two hundred sixteen".