18103194 has 24 divisors (see below), whose sum is σ = 40490112. Its totient is φ = 5839560.

The previous prime is 18103193. The next prime is 18103201. The reversal of 18103194 is 49130181.

It is not an unprimeable number, because it can be changed into a prime (18103193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15664 + ... + 16779.

It is an arithmetic number, because the mean of its divisors is an integer number (1687088).

Almost surely, 2^18103194 is an apocalyptic number.

18103194 is an abundant number, since it is smaller than the sum of its proper divisors (22386918).

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

18103194 is a wasteful number, since it uses less digits than its factorization.

18103194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32482 (or 32479 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18103194 is about 4254.7848359230. The cubic root of 18103194 is about 262.5740090639.

The spelling of 18103194 in words is "eighteen million, one hundred three thousand, one hundred ninety-four".