2635434649 has 2 divisors, whose sum is σ = 2635434650. Its totient is φ = 2635434648.

The previous prime is 2635434629. The next prime is 2635434661. The reversal of 2635434649 is 9464345362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2511513225 + 123921424 = 50115^2 + 11132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2635434649 - 2¹⁹ = 2634910361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2635434599 and 2635434608.

It is not a weakly prime, because it can be changed into another prime (2635434629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317717324 + 1317717325.

It is an arithmetic number, because the mean of its divisors is an integer number (1317717325).

Almost surely, 2^2635434649 is an apocalyptic number.

It is an amenable number.

2635434649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2635434649 is an equidigital number, since it uses as much as digits as its factorization.

2635434649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 46.

The square root of 2635434649 is about 51336.4845796827. The cubic root of 2635434649 is about 1381.2875068431.

The spelling of 2635434649 in words is "two billion, six hundred thirty-five million, four hundred thirty-four thousand, six hundred forty-nine".