1440780916 has 6 divisors (see below), whose sum is σ = 2521366610. Its totient is φ = 720390456.

The previous prime is 1440780863. The next prime is 1440780917. The reversal of 1440780916 is 6190870441.

It can be written as a sum of positive squares in only one way, i.e., 1319868900 + 120912016 = 36330^2 + 10996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440780917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180097611 + ... + 180097618.

Almost surely, 2^1440780916 is an apocalyptic number.

It is an amenable number.

1440780916 is a deficient number, since it is larger than the sum of its proper divisors (1080585694).

1440780916 is a wasteful number, since it uses less digits than its factorization.

1440780916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360195233 (or 360195231 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1440780916 is about 37957.6199991517. The cubic root of 1440780916 is about 1129.4473283491.

The spelling of 1440780916 in words is "one billion, four hundred forty million, seven hundred eighty thousand, nine hundred sixteen".