2634688791 has 54 divisors (see below), whose sum is σ = 4580233632. Its totient is φ = 1453651920.

The previous prime is 2634688783. The next prime is 2634688807. The reversal of 2634688791 is 1978864362.

It is not a de Polignac number, because 2634688791 - 2³ = 2634688783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2634688391) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6001350 + ... + 6001788.

Almost surely, 2^2634688791 is an apocalyptic number.

2634688791 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2634688791 is a deficient number, since it is larger than the sum of its proper divisors (1945544841).

2634688791 is an equidigital number, since it uses as much as digits as its factorization.

2634688791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 480 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 2634688791 is about 51329.2196609300. The cubic root of 2634688791 is about 1381.1571878534.

The spelling of 2634688791 in words is "two billion, six hundred thirty-four million, six hundred eighty-eight thousand, seven hundred ninety-one".