13998186 has 12 divisors (see below), whose sum is σ = 30329442. Its totient is φ = 4666056.

The previous prime is 13998181. The next prime is 13998197. The reversal of 13998186 is 68189931.

13998186 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13950225 + 47961 = 3735^2 + 219^2 .

It is a super-2 number, since 2×13998186² = 391898422581192, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13998181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388821 + ... + 388856.

Almost surely, 2^13998186 is an apocalyptic number.

13998186 is an abundant number, since it is smaller than the sum of its proper divisors (16331256).

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

13998186 is a wasteful number, since it uses less digits than its factorization.

13998186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777685 (or 777682 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 13998186 is about 3741.4149729748. The cubic root of 13998186 is about 241.0038164487.

The spelling of 13998186 in words is "thirteen million, nine hundred ninety-eight thousand, one hundred eighty-six".