18910196 has 12 divisors (see below), whose sum is σ = 33862752. Its totient is φ = 9235128.

The previous prime is 18910181. The next prime is 18910207. The reversal of 18910196 is 69101981.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54800 + ... + 55143.

It is an arithmetic number, because the mean of its divisors is an integer number (2821896).

Almost surely, 2^18910196 is an apocalyptic number.

It is an amenable number.

18910196 is a deficient number, since it is larger than the sum of its proper divisors (14952556).

18910196 is a wasteful number, since it uses less digits than its factorization.

18910196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109990 (or 109988 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 18910196 is about 4348.5855171538. The cubic root of 18910196 is about 266.4190917489.

The spelling of 18910196 in words is "eighteen million, nine hundred ten thousand, one hundred ninety-six".