18004101 has 16 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 11430320.

The previous prime is 18004081. The next prime is 18004121. The reversal of 18004101 is 10140081.

It is an interprime number because it is at equal distance from previous prime (18004081) and next prime (18004121).

It is a cyclic number.

It is not a de Polignac number, because 18004101 - 2⁹ = 18003589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21040 + ... + 21878.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^18004101 is an apocalyptic number.

It is an amenable number.

18004101 is a deficient number, since it is larger than the sum of its proper divisors (7155579).

18004101 is a wasteful number, since it uses less digits than its factorization.

18004101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 18004101 is about 4243.1239670790. The cubic root of 18004101 is about 262.0940409845.

Adding to 18004101 its reverse (10140081), we get a palindrome (28144182).

The spelling of 18004101 in words is "eighteen million, four thousand, one hundred one".