18874441 has 4 divisors (see below), whose sum is σ = 19057792. Its totient is φ = 18691092.

The previous prime is 18874439. The next prime is 18874459. The reversal of 18874441 is 14447881.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14447881 = 7 ⋅2063983.

It is a cyclic number.

It is not a de Polignac number, because 18874441 - 2¹ = 18874439 is a prime.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 18874441.

It is not an unprimeable number, because it can be changed into a prime (18874411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91521 + ... + 91726.

It is an arithmetic number, because the mean of its divisors is an integer number (4764448).

Almost surely, 2^18874441 is an apocalyptic number.

It is an amenable number.

18874441 is a deficient number, since it is larger than the sum of its proper divisors (183351).

18874441 is a wasteful number, since it uses less digits than its factorization.

18874441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183350.

The product of its digits is 28672, while the sum is 37.

The square root of 18874441 is about 4344.4724650986. The cubic root of 18874441 is about 266.2510726077.

It can be divided in two parts, 1887 and 4441, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 18874441 in words is "eighteen million, eight hundred seventy-four thousand, four hundred forty-one".