2640430253 has 8 divisors (see below), whose sum is σ = 2657098080. Its totient is φ = 2623784080.

The previous prime is 2640430241. The next prime is 2640430277. The reversal of 2640430253 is 3520340462.

2640430253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2640430253 - 2⁶ = 2640430189 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 (2640432253) 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, 288518 + ... + 297528.

It is an arithmetic number, because the mean of its divisors is an integer number (332137260).

Almost surely, 2^2640430253 is an apocalyptic number.

It is an amenable number.

2640430253 is a deficient number, since it is larger than the sum of its proper divisors (16667827).

2640430253 is a wasteful number, since it uses less digits than its factorization.

2640430253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 2640430253 is about 51385.1170379128. The cubic root of 2640430253 is about 1382.1597234977.

The spelling of 2640430253 in words is "two billion, six hundred forty million, four hundred thirty thousand, two hundred fifty-three".