12651189 has 4 divisors (see below), whose sum is σ = 16868256. Its totient is φ = 8434124.

The previous prime is 12651187. The next prime is 12651203. The reversal of 12651189 is 98115621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12651189 - 2¹ = 12651187 is a prime.

It is a super-2 number, since 2×12651189² = 320105166227442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2108529 + ... + 2108534.

It is an arithmetic number, because the mean of its divisors is an integer number (4217064).

Almost surely, 2^12651189 is an apocalyptic number.

It is an amenable number.

12651189 is a deficient number, since it is larger than the sum of its proper divisors (4217067).

12651189 is an equidigital number, since it uses as much as digits as its factorization.

12651189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217066.

The product of its digits is 4320, while the sum is 33.

The square root of 12651189 is about 3556.8509949111. The cubic root of 12651189 is about 233.0113706867.

It can be divided in two parts, 126 and 51189, that added together give a palindrome (51315).

The spelling of 12651189 in words is "twelve million, six hundred fifty-one thousand, one hundred eighty-nine".