18840466 has 8 divisors (see below), whose sum is σ = 28419120. Its totient is φ = 9367428.

The previous prime is 18840463. The next prime is 18840509. The reversal of 18840466 is 66404881.

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

It is not an unprimeable number, because it can be changed into a prime (18840461) 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, 25956 + ... + 26671.

It is an arithmetic number, because the mean of its divisors is an integer number (3552390).

Almost surely, 2^18840466 is an apocalyptic number.

18840466 is a deficient number, since it is larger than the sum of its proper divisors (9578654).

18840466 is a wasteful number, since it uses less digits than its factorization.

18840466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52808.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 18840466 is about 4340.5605628766. The cubic root of 18840466 is about 266.0912212808.

It can be divided in two parts, 18840 and 466, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 18840466 in words is "eighteen million, eight hundred forty thousand, four hundred sixty-six".