634013539 has 2 divisors, whose sum is σ = 634013540. Its totient is φ = 634013538.

The previous prime is 634013491. The next prime is 634013557. The reversal of 634013539 is 935310436.

634013539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634013539 - 2¹³ = 634005347 is a prime.

It is not a weakly prime, because it can be changed into another prime (634013579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317006769 + 317006770.

It is an arithmetic number, because the mean of its divisors is an integer number (317006770).

Almost surely, 2^634013539 is an apocalyptic number.

634013539 is a deficient number, since it is larger than the sum of its proper divisors (1).

634013539 is an equidigital number, since it uses as much as digits as its factorization.

634013539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 634013539 is about 25179.6254737834. The cubic root of 634013539 is about 859.0784878701.

The spelling of 634013539 in words is "six hundred thirty-four million, thirteen thousand, five hundred thirty-nine".