2653781823 has 48 divisors (see below), whose sum is σ = 4787667456. Its totient is φ = 1376118720.

The previous prime is 2653781807. The next prime is 2653781849. The reversal of 2653781823 is 3281873562.

2653781823 is a `hidden beast` number, since 265 + 378 + 18 + 2 + 3 = 666.

It is not a de Polignac number, because 2653781823 - 2⁴ = 2653781807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653781023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 421686 + ... + 427932.

It is an arithmetic number, because the mean of its divisors is an integer number (99743072).

Almost surely, 2^2653781823 is an apocalyptic number.

2653781823 is a deficient number, since it is larger than the sum of its proper divisors (2133885633).

2653781823 is a wasteful number, since it uses less digits than its factorization.

2653781823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884 (or 6881 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 2653781823 is about 51514.8699212179. The cubic root of 2653781823 is about 1384.4854788802.

The spelling of 2653781823 in words is "two billion, six hundred fifty-three million, seven hundred eighty-one thousand, eight hundred twenty-three".