1440757412 has 18 divisors (see below), whose sum is σ = 2670218838. Its totient is φ = 677856192.

The previous prime is 1440757397. The next prime is 1440757453. The reversal of 1440757412 is 2147570441.

It can be written as a sum of positive squares in only one way, i.e., 1356006976 + 84750436 = 36824^2 + 9206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310703 + ... + 315305.

It is an arithmetic number, because the mean of its divisors is an integer number (148345491).

Almost surely, 2^1440757412 is an apocalyptic number.

It is an amenable number.

1440757412 is a deficient number, since it is larger than the sum of its proper divisors (1229461426).

1440757412 is an frugal number, since it uses more digits than its factorization.

1440757412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227 (or 4622 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 1440757412 is about 37957.3103894362. The cubic root of 1440757412 is about 1129.4411866163.

The spelling of 1440757412 in words is "one billion, four hundred forty million, seven hundred fifty-seven thousand, four hundred twelve".