2635434641 has 4 divisors (see below), whose sum is σ = 3011925312. Its totient is φ = 2258943972.

The previous prime is 2635434629. The next prime is 2635434649. The reversal of 2635434641 is 1464345362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2635434641 - 2¹⁰ = 2635433617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2635434595 and 2635434604.

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, 188245325 + ... + 188245338.

It is an arithmetic number, because the mean of its divisors is an integer number (752981328).

Almost surely, 2^2635434641 is an apocalyptic number.

It is an amenable number.

2635434641 is a deficient number, since it is larger than the sum of its proper divisors (376490671).

2635434641 is an equidigital number, since it uses as much as digits as its factorization.

2635434641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376490670.

The product of its digits is 207360, while the sum is 38.

The square root of 2635434641 is about 51336.4845017654. The cubic root of 2635434641 is about 1381.2875054454.

The spelling of 2635434641 in words is "two billion, six hundred thirty-five million, four hundred thirty-four thousand, six hundred forty-one".