634249194 has 16 divisors (see below), whose sum is σ = 1277013600. Its totient is φ = 209997200.

The previous prime is 634249193. The next prime is 634249211. The reversal of 634249194 is 491942436.

It is not an unprimeable number, because it can be changed into a prime (634249193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353832 + ... + 355619.

It is an arithmetic number, because the mean of its divisors is an integer number (79813350).

Almost surely, 2^634249194 is an apocalyptic number.

634249194 is an abundant number, since it is smaller than the sum of its proper divisors (642764406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634249194 is a wasteful number, since it uses less digits than its factorization.

634249194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709605.

The product of its digits is 186624, while the sum is 42.

The square root of 634249194 is about 25184.3045169010. The cubic root of 634249194 is about 859.1849109729.

The spelling of 634249194 in words is "six hundred thirty-four million, two hundred forty-nine thousand, one hundred ninety-four".