18013774 has 8 divisors (see below), whose sum is σ = 27064368. Its totient is φ = 8992320.

The previous prime is 18013769. The next prime is 18013777. The reversal of 18013774 is 47731081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013777) 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 3 ways as a sum of consecutive naturals, for example, 5667 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (3383046).

Almost surely, 2^18013774 is an apocalyptic number.

18013774 is a deficient number, since it is larger than the sum of its proper divisors (9050594).

18013774 is a wasteful number, since it uses less digits than its factorization.

18013774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14570.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 18013774 is about 4244.2636581626. The cubic root of 18013774 is about 262.1409706953.

The spelling of 18013774 in words is "eighteen million, thirteen thousand, seven hundred seventy-four".