2573942864 has 20 divisors (see below), whose sum is σ = 4995168756. Its totient is φ = 1284867072.

The previous prime is 2573942849. The next prime is 2573942893. The reversal of 2573942864 is 4682493752.

It can be written as a sum of positive squares in 2 ways, for example, as 1275061264 + 1298881600 = 35708^2 + 36040^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121409 + ... + 141024.

Almost surely, 2^2573942864 is an apocalyptic number.

It is an amenable number.

2573942864 is a deficient number, since it is larger than the sum of its proper divisors (2421225892).

2573942864 is a wasteful number, since it uses less digits than its factorization.

2573942864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263054 (or 263048 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 2573942864 is about 50734.0404856542. The cubic root of 2573942864 is about 1370.4597998443.

The spelling of 2573942864 in words is "two billion, five hundred seventy-three million, nine hundred forty-two thousand, eight hundred sixty-four".