1640053975 has 24 divisors (see below), whose sum is σ = 2363598720. Its totient is φ = 1105540320.

The previous prime is 1640053931. The next prime is 1640053993. The reversal of 1640053975 is 5793500461.

It is a de Polignac number, because none of the positive numbers 2^k-1640053975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69097 + ... + 89746.

It is an arithmetic number, because the mean of its divisors is an integer number (98483280).

Almost surely, 2^1640053975 is an apocalyptic number.

1640053975 is a deficient number, since it is larger than the sum of its proper divisors (723544745).

1640053975 is a wasteful number, since it uses less digits than its factorization.

1640053975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158919 (or 158914 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 1640053975 is about 40497.5798659624. The cubic root of 1640053975 is about 1179.2866451079.

The spelling of 1640053975 in words is "one billion, six hundred forty million, fifty-three thousand, nine hundred seventy-five".