634212537019 has 2 divisors, whose sum is σ = 634212537020. Its totient is φ = 634212537018.

The previous prime is 634212537011. The next prime is 634212537053. The reversal of 634212537019 is 910735212436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634212537019 - 2³ = 634212537011 is a prime.

It is a super-2 number, since 2×634212537019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (634212537011) 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, 317106268509 + 317106268510.

It is an arithmetic number, because the mean of its divisors is an integer number (317106268510).

Almost surely, 2^634212537019 is an apocalyptic number.

634212537019 is a deficient number, since it is larger than the sum of its proper divisors (1).

634212537019 is an equidigital number, since it uses as much as digits as its factorization.

634212537019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 634212537019 in words is "six hundred thirty-four billion, two hundred twelve million, five hundred thirty-seven thousand, nineteen".