2572635813 has 24 divisors (see below), whose sum is σ = 3934305984. Its totient is φ = 1491378240.

The previous prime is 2572635809. The next prime is 2572635817. The reversal of 2572635813 is 3185362752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2572635809) and next prime (2572635817).

It is not a de Polignac number, because 2572635813 - 2² = 2572635809 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572635817) 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 23 ways as a sum of consecutive naturals, for example, 145720 + ... + 162417.

It is an arithmetic number, because the mean of its divisors is an integer number (163929416).

Almost surely, 2^2572635813 is an apocalyptic number.

2572635813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2572635813 is a deficient number, since it is larger than the sum of its proper divisors (1361670171).

2572635813 is a wasteful number, since it uses less digits than its factorization.

2572635813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308185 (or 308174 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 2572635813 is about 50721.1574493327. The cubic root of 2572635813 is about 1370.2277869063.

The spelling of 2572635813 in words is "two billion, five hundred seventy-two million, six hundred thirty-five thousand, eight hundred thirteen".