2564383261 has 8 divisors (see below), whose sum is σ = 2893975200. Its totient is φ = 2250869040.

The previous prime is 2564383249. The next prime is 2564383267. The reversal of 2564383261 is 1623834652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2564383261 - 2⁹ = 2564382749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564383267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4019091 + ... + 4019728.

It is an arithmetic number, because the mean of its divisors is an integer number (361746900).

Almost surely, 2^2564383261 is an apocalyptic number.

It is an amenable number.

2564383261 is a deficient number, since it is larger than the sum of its proper divisors (329591939).

2564383261 is a wasteful number, since it uses less digits than its factorization.

2564383261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8038859.

The product of its digits is 207360, while the sum is 40.

The square root of 2564383261 is about 50639.7399381158. The cubic root of 2564383261 is about 1368.7610695407.

The spelling of 2564383261 in words is "two billion, five hundred sixty-four million, three hundred eighty-three thousand, two hundred sixty-one".