18140604 has 24 divisors (see below), whose sum is σ = 42524160. Its totient is φ = 6018864.

The previous prime is 18140599. The next prime is 18140609. The reversal of 18140604 is 40604181.

It is an interprime number because it is at equal distance from previous prime (18140599) and next prime (18140609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140609) 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 7 ways as a sum of consecutive naturals, for example, 714 + ... + 6065.

It is an arithmetic number, because the mean of its divisors is an integer number (1771840).

Almost surely, 2^18140604 is an apocalyptic number.

It is an amenable number.

18140604 is an abundant number, since it is smaller than the sum of its proper divisors (24383556).

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

18140604 is a wasteful number, since it uses less digits than its factorization.

18140604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009 (or 7007 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18140604 is about 4259.1787940870. The cubic root of 18140604 is about 262.7547531386.

Adding to 18140604 its reverse (40604181), we get a palindrome (58744785).

The spelling of 18140604 in words is "eighteen million, one hundred forty thousand, six hundred four".