2643839253 has 24 divisors (see below), whose sum is σ = 4254696576. Its totient is φ = 1568232000.

The previous prime is 2643839243. The next prime is 2643839273. The reversal of 2643839253 is 3529383462.

2643839253 is a `hidden beast` number, since 264 + 383 + 9 + 2 + 5 + 3 = 666.

2643839253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2643839253 - 2⁵ = 2643839221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2643839199 and 2643839208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643839243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279448 + ... + 288753.

It is an arithmetic number, because the mean of its divisors is an integer number (177279024).

Almost surely, 2^2643839253 is an apocalyptic number.

It is an amenable number.

2643839253 is a deficient number, since it is larger than the sum of its proper divisors (1610857323).

2643839253 is a wasteful number, since it uses less digits than its factorization.

2643839253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568265 (or 568262 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 2643839253 is about 51418.2774215551. The cubic root of 2643839253 is about 1382.7542927838.

The spelling of 2643839253 in words is "two billion, six hundred forty-three million, eight hundred thirty-nine thousand, two hundred fifty-three".