634172093 has 2 divisors, whose sum is σ = 634172094. Its totient is φ = 634172092.

The previous prime is 634172089. The next prime is 634172113. The reversal of 634172093 is 390271436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603291844 + 30880249 = 24562^2 + 5557^2 .

It is a cyclic number.

It is not a de Polignac number, because 634172093 - 2² = 634172089 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634172023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317086046 + 317086047.

It is an arithmetic number, because the mean of its divisors is an integer number (317086047).

Almost surely, 2^634172093 is an apocalyptic number.

It is an amenable number.

634172093 is a deficient number, since it is larger than the sum of its proper divisors (1).

634172093 is an equidigital number, since it uses as much as digits as its factorization.

634172093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 634172093 is about 25182.7737352342. The cubic root of 634172093 is about 859.1500946363.

The spelling of 634172093 in words is "six hundred thirty-four million, one hundred seventy-two thousand, ninety-three".