634000449487 has 2 divisors, whose sum is σ = 634000449488. Its totient is φ = 634000449486.

The previous prime is 634000449463. The next prime is 634000449491. The reversal of 634000449487 is 784944000436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634000449487 - 2²³ = 633992060879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634000449487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634000449497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317000224743 + 317000224744.

It is an arithmetic number, because the mean of its divisors is an integer number (317000224744).

Almost surely, 2^634000449487 is an apocalyptic number.

634000449487 is a deficient number, since it is larger than the sum of its proper divisors (1).

634000449487 is an equidigital number, since it uses as much as digits as its factorization.

634000449487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 634000449487 in words is "six hundred thirty-four billion, four hundred forty-nine thousand, four hundred eighty-seven".