18229312194 has 32 divisors (see below), whose sum is σ = 38610400896. Its totient is φ = 5717940480.

The previous prime is 18229312117. The next prime is 18229312219. The reversal of 18229312194 is 49121392281.

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 15 ways as a sum of consecutive naturals, for example, 679524 + ... + 705840.

It is an arithmetic number, because the mean of its divisors is an integer number (1206575028).

Almost surely, 2^18229312194 is an apocalyptic number.

18229312194 is an abundant number, since it is smaller than the sum of its proper divisors (20381088702).

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

18229312194 is a wasteful number, since it uses less digits than its factorization.

18229312194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33130.

The product of its digits is 62208, while the sum is 42.

The spelling of 18229312194 in words is "eighteen billion, two hundred twenty-nine million, three hundred twelve thousand, one hundred ninety-four".