2635434643 has 4 divisors (see below), whose sum is σ = 2641078440. Its totient is φ = 2629790848.

The previous prime is 2635434629. The next prime is 2635434649. The reversal of 2635434643 is 3464345362.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2635434643 - 2¹⁷ = 2635303571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2635434596 and 2635434605.

It is not an unprimeable number, because it can be changed into a prime (2635434649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821198 + ... + 2822131.

It is an arithmetic number, because the mean of its divisors is an integer number (660269610).

Almost surely, 2^2635434643 is an apocalyptic number.

2635434643 is a deficient number, since it is larger than the sum of its proper divisors (5643797).

2635434643 is an equidigital number, since it uses as much as digits as its factorization.

2635434643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643796.

The product of its digits is 622080, while the sum is 40.

The square root of 2635434643 is about 51336.4845212447. The cubic root of 2635434643 is about 1381.2875057948.

The spelling of 2635434643 in words is "two billion, six hundred thirty-five million, four hundred thirty-four thousand, six hundred forty-three".