12189453 has 8 divisors (see below), whose sum is σ = 16275648. Its totient is φ = 8114784.

The previous prime is 12189449. The next prime is 12189461. The reversal of 12189453 is 35498121.

12189453 is a nontrivial binomial coefficient, being equal to C(4938, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12189453 - 2² = 12189449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (2034456).

Almost surely, 2^12189453 is an apocalyptic number.

12189453 is the 4937-th triangular number and also the 2469-th hexagonal number.

It is an amenable number.

12189453 is a deficient number, since it is larger than the sum of its proper divisors (4086195).

12189453 is an equidigital number, since it uses as much as digits as its factorization.

12189453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763.

The product of its digits is 8640, while the sum is 33.

The square root of 12189453 is about 3491.3397142071. The cubic root of 12189453 is about 230.1413938408.

The spelling of 12189453 in words is "twelve million, one hundred eighty-nine thousand, four hundred fifty-three".