13818198 has 16 divisors (see below), whose sum is σ = 27814320. Its totient is φ = 4576416.

The previous prime is 13818197. The next prime is 13818199. The reversal of 13818198 is 89181831.

It is an interprime number because it is at equal distance from previous prime (13818197) and next prime (13818199).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13818191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6393 + ... + 8276.

It is an arithmetic number, because the mean of its divisors is an integer number (1738395).

Almost surely, 2^13818198 is an apocalyptic number.

13818198 is an abundant number, since it is smaller than the sum of its proper divisors (13996122).

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

13818198 is a wasteful number, since it uses less digits than its factorization.

13818198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14831.

The product of its digits is 13824, while the sum is 39.

The square root of 13818198 is about 3717.2836857039. The cubic root of 13818198 is about 239.9664189126.

It can be divided in two parts, 138 and 18198, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 13818198 in words is "thirteen million, eight hundred eighteen thousand, one hundred ninety-eight".