2564735854 has 4 divisors (see below), whose sum is σ = 3847103784. Its totient is φ = 1282367926.

The previous prime is 2564735851. The next prime is 2564735861. The reversal of 2564735854 is 4585374652.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2564735798 and 2564735807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564735851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641183962 + ... + 641183965.

It is an arithmetic number, because the mean of its divisors is an integer number (961775946).

Almost surely, 2^2564735854 is an apocalyptic number.

2564735854 is a deficient number, since it is larger than the sum of its proper divisors (1282367930).

2564735854 is a wasteful number, since it uses less digits than its factorization.

2564735854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282367929.

The product of its digits is 4032000, while the sum is 49.

The square root of 2564735854 is about 50643.2212048167. The cubic root of 2564735854 is about 1368.8237998225.

The spelling of 2564735854 in words is "two billion, five hundred sixty-four million, seven hundred thirty-five thousand, eight hundred fifty-four".