12918198 has 32 divisors (see below), whose sum is σ = 28032480. Its totient is φ = 3952640.

The previous prime is 12918197. The next prime is 12918209. The reversal of 12918198 is 89181921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918197) 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 15 ways as a sum of consecutive naturals, for example, 2638 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (876015).

Almost surely, 2^12918198 is an apocalyptic number.

12918198 is an abundant number, since it is smaller than the sum of its proper divisors (15114282).

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

12918198 is a wasteful number, since it uses less digits than its factorization.

12918198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152.

The product of its digits is 10368, while the sum is 39.

The square root of 12918198 is about 3594.1894774761. The cubic root of 12918198 is about 234.6392412458.

The spelling of 12918198 in words is "twelve million, nine hundred eighteen thousand, one hundred ninety-eight".