2564869383 has 24 divisors (see below), whose sum is σ = 3793323456. Its totient is φ = 1669248000.

The previous prime is 2564869361. The next prime is 2564869393. The reversal of 2564869383 is 3839684652.

2564869383 is a `hidden beast` number, since 256 + 4 + 8 + 6 + 9 + 383 = 666.

It is not a de Polignac number, because 2564869383 - 2⁶ = 2564869319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564869393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162063 + ... + 177183.

It is an arithmetic number, because the mean of its divisors is an integer number (158055144).

Almost surely, 2^2564869383 is an apocalyptic number.

2564869383 is a deficient number, since it is larger than the sum of its proper divisors (1228454073).

2564869383 is a wasteful number, since it uses less digits than its factorization.

2564869383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575 (or 15572 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 2564869383 is about 50644.5395180961. The cubic root of 2564869383 is about 1368.8475546406.

The spelling of 2564869383 in words is "two billion, five hundred sixty-four million, eight hundred sixty-nine thousand, three hundred eighty-three".