1440645354 has 24 divisors (see below), whose sum is σ = 3229033860. Its totient is φ = 463655808.

The previous prime is 1440645329. The next prime is 1440645377. The reversal of 1440645354 is 4535460441.

1440645354 is a `hidden beast` number, since 1 + 4 + 4 + 0 + 645 + 3 + 5 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1345055625 + 95589729 = 36675^2 + 9777^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1379407 + ... + 1380450.

Almost surely, 2^1440645354 is an apocalyptic number.

1440645354 is an abundant number, since it is smaller than the sum of its proper divisors (1788388506).

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

1440645354 is a wasteful number, since it uses less digits than its factorization.

1440645354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759894 (or 2759891 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 1440645354 is about 37955.8342550918. The cubic root of 1440645354 is about 1129.4119042863.

The spelling of 1440645354 in words is "one billion, four hundred forty million, six hundred forty-five thousand, three hundred fifty-four".