1440204668 has 18 divisors (see below), whose sum is σ = 2931845616. Its totient is φ = 617230488.

The previous prime is 1440204653. The next prime is 1440204671. The reversal of 1440204668 is 8664020441.

It is a super-3 number, since 3×1440204668³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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, 3673796 + ... + 3674187.

It is an arithmetic number, because the mean of its divisors is an integer number (162880312).

Almost surely, 2^1440204668 is an apocalyptic number.

It is an amenable number.

1440204668 is an abundant number, since it is smaller than the sum of its proper divisors (1491640948).

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

1440204668 is a wasteful number, since it uses less digits than its factorization.

1440204668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348001 (or 7347992 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 1440204668 is about 37950.0285638891. The cubic root of 1440204668 is about 1129.2967321122.

The spelling of 1440204668 in words is "one billion, four hundred forty million, two hundred four thousand, six hundred sixty-eight".