18047734 has 4 divisors (see below), whose sum is σ = 27071604. Its totient is φ = 9023866.

The previous prime is 18047707. The next prime is 18047737. The reversal of 18047734 is 43774081.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18047734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18047737) 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 as a sum of consecutive naturals, namely, 4511932 + ... + 4511935.

It is an arithmetic number, because the mean of its divisors is an integer number (6767901).

Almost surely, 2^18047734 is an apocalyptic number.

18047734 is a deficient number, since it is larger than the sum of its proper divisors (9023870).

18047734 is an equidigital number, since it uses as much as digits as its factorization.

18047734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023869.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 18047734 is about 4248.2624683510. The cubic root of 18047734 is about 262.3055987726.

It can be divided in two parts, 18047 and 734, that added together give a palindrome (18781).

The spelling of 18047734 in words is "eighteen million, forty-seven thousand, seven hundred thirty-four".