634448619 has 60 divisors (see below), whose sum is σ = 1167468984. Its totient is φ = 341179776.

The previous prime is 634448593. The next prime is 634448623. The reversal of 634448619 is 916844436.

634448619 is a `hidden beast` number, since 634 + 4 + 4 + 8 + 6 + 1 + 9 = 666.

It is not a de Polignac number, because 634448619 - 2⁵ = 634448587 is a prime.

It is a super-2 number, since 2×634448619² = 805050100302014322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634448219) 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 in 59 ways as a sum of consecutive naturals, for example, 62772 + ... + 72174.

Almost surely, 2^634448619 is an apocalyptic number.

634448619 is a deficient number, since it is larger than the sum of its proper divisors (533020365).

634448619 is a wasteful number, since it uses less digits than its factorization.

634448619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446 (or 9430 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 634448619 is about 25188.2635169636. The cubic root of 634448619 is about 859.2749518156.

The spelling of 634448619 in words is "six hundred thirty-four million, four hundred forty-eight thousand, six hundred nineteen".