2564539698 has 32 divisors (see below), whose sum is σ = 6116668416. Its totient is φ = 700867728.

The previous prime is 2564539693. The next prime is 2564539699. The reversal of 2564539698 is 8969354652.

2564539698 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2564539693) 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, 1326436 + ... + 1328367.

It is an arithmetic number, because the mean of its divisors is an integer number (191145888).

Almost surely, 2^2564539698 is an apocalyptic number.

2564539698 is an abundant number, since it is smaller than the sum of its proper divisors (3552128718).

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

2564539698 is a wasteful number, since it uses less digits than its factorization.

2564539698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654838.

The product of its digits is 13996800, while the sum is 57.

The square root of 2564539698 is about 50641.2845216233. The cubic root of 2564539698 is about 1368.7889021616.

The spelling of 2564539698 in words is "two billion, five hundred sixty-four million, five hundred thirty-nine thousand, six hundred ninety-eight".