634024757489 has 2 divisors, whose sum is σ = 634024757490. Its totient is φ = 634024757488.

The previous prime is 634024757477. The next prime is 634024757491. The reversal of 634024757489 is 984757420436.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376955477089 + 257069280400 = 613967^2 + 507020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634024757489 is a prime.

Together with 634024757491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634024757689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317012378744 + 317012378745.

It is an arithmetic number, because the mean of its divisors is an integer number (317012378745).

Almost surely, 2^634024757489 is an apocalyptic number.

It is an amenable number.

634024757489 is a deficient number, since it is larger than the sum of its proper divisors (1).

634024757489 is an equidigital number, since it uses as much as digits as its factorization.

634024757489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40642560, while the sum is 59.

The spelling of 634024757489 in words is "six hundred thirty-four billion, twenty-four million, seven hundred fifty-seven thousand, four hundred eighty-nine".