634382653018 has 16 divisors (see below), whose sum is σ = 958661213544. Its totient is φ = 314829598720.

The previous prime is 634382653001. The next prime is 634382653057. The reversal of 634382653018 is 810356283436.

It can be written as a sum of positive squares in 4 ways, for example, as 634343752849 + 38900169 = 796457^2 + 6237^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1727898 + ... + 2062618.

Almost surely, 2^634382653018 is an apocalyptic number.

634382653018 is a deficient number, since it is larger than the sum of its proper divisors (324278560526).

634382653018 is a wasteful number, since it uses less digits than its factorization.

634382653018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341777.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 634382653018 in words is "six hundred thirty-four billion, three hundred eighty-two million, six hundred fifty-three thousand, eighteen".