18260198 has 16 divisors (see below), whose sum is σ = 30911760. Its totient is φ = 8013600.

The previous prime is 18260189. The next prime is 18260201. The reversal of 18260198 is 89106281.

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 7 ways as a sum of consecutive naturals, for example, 13673 + ... + 14948.

It is an arithmetic number, because the mean of its divisors is an integer number (1931985).

Almost surely, 2^18260198 is an apocalyptic number.

18260198 is a deficient number, since it is larger than the sum of its proper divisors (12651562).

18260198 is a wasteful number, since it uses less digits than its factorization.

18260198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28663.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 18260198 is about 4273.1952915822. The cubic root of 18260198 is about 263.3309024327.

The spelling of 18260198 in words is "eighteen million, two hundred sixty thousand, one hundred ninety-eight".