634448671958 has 32 divisors (see below), whose sum is σ = 973740579840. Its totient is φ = 309894375040.

The previous prime is 634448671943. The next prime is 634448671963. The reversal of 634448671958 is 859176844436.

634448671958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 634448671894 and 634448671903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149596718 + ... + 149600958.

It is an arithmetic number, because the mean of its divisors is an integer number (30429393120).

Almost surely, 2^634448671958 is an apocalyptic number.

634448671958 is a deficient number, since it is larger than the sum of its proper divisors (339291907882).

634448671958 is a wasteful number, since it uses less digits than its factorization.

634448671958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892.

The product of its digits is 139345920, while the sum is 65.

The spelling of 634448671958 in words is "six hundred thirty-four billion, four hundred forty-eight million, six hundred seventy-one thousand, nine hundred fifty-eight".