2564373349 has 4 divisors (see below), whose sum is σ = 2587899820. Its totient is φ = 2540846880.

The previous prime is 2564373341. The next prime is 2564373353. The reversal of 2564373349 is 9433734652.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1073872900 + 1490500449 = 32770^2 + 38607^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564373349 - 2³ = 2564373341 is a prime.

It is a super-2 number, since 2×2564373349² = 13152021346122951602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2564373299 and 2564373308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564373341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11763072 + ... + 11763289.

It is an arithmetic number, because the mean of its divisors is an integer number (646974955).

Almost surely, 2^2564373349 is an apocalyptic number.

It is an amenable number.

2564373349 is a deficient number, since it is larger than the sum of its proper divisors (23526471).

2564373349 is a wasteful number, since it uses less digits than its factorization.

2564373349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23526470.

The product of its digits is 1632960, while the sum is 46.

The square root of 2564373349 is about 50639.6420702200. The cubic root of 2564373349 is about 1368.7593060007.

The spelling of 2564373349 in words is "two billion, five hundred sixty-four million, three hundred seventy-three thousand, three hundred forty-nine".