18934004 has 6 divisors (see below), whose sum is σ = 33134514. Its totient is φ = 9467000.

The previous prime is 18934001. The next prime is 18934007. The reversal of 18934004 is 40043981.

It is an interprime number because it is at equal distance from previous prime (18934001) and next prime (18934007).

It can be written as a sum of positive squares in only one way, i.e., 18905104 + 28900 = 4348^2 + 170^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2366747 + ... + 2366754.

It is an arithmetic number, because the mean of its divisors is an integer number (5522419).

Almost surely, 2^18934004 is an apocalyptic number.

It is an amenable number.

18934004 is a deficient number, since it is larger than the sum of its proper divisors (14200510).

18934004 is a wasteful number, since it uses less digits than its factorization.

18934004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733505 (or 4733503 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18934004 is about 4351.3220979376. The cubic root of 18934004 is about 266.5308523688.

Adding to 18934004 its reverse (40043981), we get a palindrome (58977985).

The spelling of 18934004 in words is "eighteen million, nine hundred thirty-four thousand, four".