18804334 has 4 divisors (see below), whose sum is σ = 28206504. Its totient is φ = 9402166.

The previous prime is 18804299. The next prime is 18804341. The reversal of 18804334 is 43340881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43340881 = 19 ⋅2281099.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18804296 and 18804305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4701082 + ... + 4701085.

It is an arithmetic number, because the mean of its divisors is an integer number (7051626).

Almost surely, 2^18804334 is an apocalyptic number.

18804334 is a deficient number, since it is larger than the sum of its proper divisors (9402170).

18804334 is an equidigital number, since it uses as much as digits as its factorization.

18804334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402169.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 18804334 is about 4336.3964302171. The cubic root of 18804334 is about 265.9210103335.

The spelling of 18804334 in words is "eighteen million, eight hundred four thousand, three hundred thirty-four".