1440002163 has 16 divisors (see below), whose sum is σ = 1988167680. Its totient is φ = 925984416.

The previous prime is 1440002159. The next prime is 1440002171. The reversal of 1440002163 is 3612000441.

It is not a de Polignac number, because 1440002163 - 2² = 1440002159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440002183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86956 + ... + 102182.

It is an arithmetic number, because the mean of its divisors is an integer number (124260480).

Almost surely, 2^1440002163 is an apocalyptic number.

1440002163 is a deficient number, since it is larger than the sum of its proper divisors (548165517).

1440002163 is a wasteful number, since it uses less digits than its factorization.

1440002163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16346.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1440002163 is about 37947.3604220373. The cubic root of 1440002163 is about 1129.2438000628.

The spelling of 1440002163 in words is "one billion, four hundred forty million, two thousand, one hundred sixty-three".