12189813 has 16 divisors (see below), whose sum is σ = 16814400. Its totient is φ = 7850880.

The previous prime is 12189809. The next prime is 12189817. The reversal of 12189813 is 31898121.

It is an interprime number because it is at equal distance from previous prime (12189809) and next prime (12189817).

It is not a de Polignac number, because 12189813 - 2² = 12189809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10233 + ... + 11361.

It is an arithmetic number, because the mean of its divisors is an integer number (1050900).

Almost surely, 2^12189813 is an apocalyptic number.

It is an amenable number.

12189813 is a deficient number, since it is larger than the sum of its proper divisors (4624587).

12189813 is a wasteful number, since it uses less digits than its factorization.

12189813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252.

The product of its digits is 3456, while the sum is 33.

The square root of 12189813 is about 3491.3912699667. The cubic root of 12189813 is about 230.1436594631.

The spelling of 12189813 in words is "twelve million, one hundred eighty-nine thousand, eight hundred thirteen".