18905868134 has 16 divisors (see below), whose sum is σ = 29309337216. Its totient is φ = 9136833600.

The previous prime is 18905868119. The next prime is 18905868151. The reversal of 18905868134 is 43186850981.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 134807 + ... + 236610.

It is an arithmetic number, because the mean of its divisors is an integer number (1831833576).

Almost surely, 2^18905868134 is an apocalyptic number.

18905868134 is a deficient number, since it is larger than the sum of its proper divisors (10403469082).

18905868134 is a wasteful number, since it uses less digits than its factorization.

18905868134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372271.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 18905868134 in words is "eighteen billion, nine hundred five million, eight hundred sixty-eight thousand, one hundred thirty-four".