18734118 has 32 divisors (see below), whose sum is σ = 40515552. Its totient is φ = 5740800.

The previous prime is 18734113. The next prime is 18734123. The reversal of 18734118 is 81143781.

It is an interprime number because it is at equal distance from previous prime (18734113) and next prime (18734123).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734113) 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 15 ways as a sum of consecutive naturals, for example, 35698 + ... + 36218.

It is an arithmetic number, because the mean of its divisors is an integer number (1266111).

Almost surely, 2^18734118 is an apocalyptic number.

18734118 is an abundant number, since it is smaller than the sum of its proper divisors (21781434).

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

18734118 is a wasteful number, since it uses less digits than its factorization.

18734118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its digits is 5376, while the sum is 33.

The square root of 18734118 is about 4328.2927350169. The cubic root of 18734118 is about 265.5896115808.

Adding to 18734118 its reverse (81143781), we get a palindrome (99877899).

The spelling of 18734118 in words is "eighteen million, seven hundred thirty-four thousand, one hundred eighteen".