634172113 has 2 divisors, whose sum is σ = 634172114. Its totient is φ = 634172112.

The previous prime is 634172093. The next prime is 634172171. The reversal of 634172113 is 311271436.

634172113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385258384 + 248913729 = 19628^2 + 15777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634172113 is a prime.

It is not a weakly prime, because it can be changed into another prime (634172183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317086056 + 317086057.

It is an arithmetic number, because the mean of its divisors is an integer number (317086057).

Almost surely, 2^634172113 is an apocalyptic number.

It is an amenable number.

634172113 is a deficient number, since it is larger than the sum of its proper divisors (1).

634172113 is an equidigital number, since it uses as much as digits as its factorization.

634172113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 634172113 is about 25182.7741323310. The cubic root of 634172113 is about 859.1501036680.

The spelling of 634172113 in words is "six hundred thirty-four million, one hundred seventy-two thousand, one hundred thirteen".