18842469 has 8 divisors (see below), whose sum is σ = 25222080. Its totient is φ = 12512256.

The previous prime is 18842437. The next prime is 18842491. The reversal of 18842469 is 96424881.

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

It is not a de Polignac number, because 18842469 - 2⁵ = 18842437 is a prime.

It is a super-2 number, since 2×18842469² = 710077276031922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18842469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842269) 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 7 ways as a sum of consecutive naturals, for example, 11449 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (3152760).

Almost surely, 2^18842469 is an apocalyptic number.

It is an amenable number.

18842469 is a deficient number, since it is larger than the sum of its proper divisors (6379611).

18842469 is a wasteful number, since it uses less digits than its factorization.

18842469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24699.

The product of its digits is 110592, while the sum is 42.

The square root of 18842469 is about 4340.7912873116. The cubic root of 18842469 is about 266.1006506624.

The spelling of 18842469 in words is "eighteen million, eight hundred forty-two thousand, four hundred sixty-nine".