18805974 has 32 divisors (see below), whose sum is σ = 41537664. Its totient is φ = 5628480.

The previous prime is 18805951. The next prime is 18806077. The reversal of 18805974 is 47950881.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3762 + ... + 7194.

It is an arithmetic number, because the mean of its divisors is an integer number (1298052).

Almost surely, 2^18805974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18805974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20768832).

18805974 is an abundant number, since it is smaller than the sum of its proper divisors (22731690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18805974 is a wasteful number, since it uses less digits than its factorization.

18805974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18805974 is about 4336.5855231968. The cubic root of 18805974 is about 265.9287407815.

The spelling of 18805974 in words is "eighteen million, eight hundred five thousand, nine hundred seventy-four".