2653381791 has 24 divisors (see below), whose sum is σ = 3979238016. Its totient is φ = 1701933120.

The previous prime is 2653381763. The next prime is 2653381799. The reversal of 2653381791 is 1971833562.

2653381791 is a `hidden beast` number, since 26 + 533 + 8 + 1 + 7 + 91 = 666.

It is not a de Polignac number, because 2653381791 - 2⁶ = 2653381727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653381799) 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, 20781 + ... + 75753.

It is an arithmetic number, because the mean of its divisors is an integer number (165801584).

Almost surely, 2^2653381791 is an apocalyptic number.

2653381791 is a deficient number, since it is larger than the sum of its proper divisors (1325856225).

2653381791 is a wasteful number, since it uses less digits than its factorization.

2653381791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55183 (or 55180 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2653381791 is about 51510.9870901345. The cubic root of 2653381791 is about 1384.4159094427.

The spelling of 2653381791 in words is "two billion, six hundred fifty-three million, three hundred eighty-one thousand, seven hundred ninety-one".