634101493 has 2 divisors, whose sum is σ = 634101494. Its totient is φ = 634101492.

The previous prime is 634101469. The next prime is 634101529. The reversal of 634101493 is 394101436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618914884 + 15186609 = 24878^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 634101493 - 2⁹ = 634100981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632101493) 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, 317050746 + 317050747.

It is an arithmetic number, because the mean of its divisors is an integer number (317050747).

Almost surely, 2^634101493 is an apocalyptic number.

It is an amenable number.

634101493 is a deficient number, since it is larger than the sum of its proper divisors (1).

634101493 is an equidigital number, since it uses as much as digits as its factorization.

634101493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 634101493 is about 25181.3719443560. The cubic root of 634101493 is about 859.1182114675.

The spelling of 634101493 in words is "six hundred thirty-four million, one hundred one thousand, four hundred ninety-three".