18704101 has 8 divisors (see below), whose sum is σ = 20837880. Its totient is φ = 16669632.

The previous prime is 18704069. The next prime is 18704111. The reversal of 18704101 is 10140781.

It can be written as a sum of positive squares in 4 ways, for example, as 599076 + 18105025 = 774^2 + 4255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18704101 - 2⁵ = 18704069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18704111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24430 + ... + 25183.

It is an arithmetic number, because the mean of its divisors is an integer number (2604735).

Almost surely, 2^18704101 is an apocalyptic number.

It is an amenable number.

18704101 is a deficient number, since it is larger than the sum of its proper divisors (2133779).

18704101 is a wasteful number, since it uses less digits than its factorization.

18704101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49655.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 18704101 is about 4324.8238114402. The cubic root of 18704101 is about 265.4476875428.

Adding to 18704101 its reverse (10140781), we get a palindrome (28844882).

The spelling of 18704101 in words is "eighteen million, seven hundred four thousand, one hundred one".