18113601 has 8 divisors (see below), whose sum is σ = 26347104. Its totient is φ = 10977920.

The previous prime is 18113587. The next prime is 18113611. The reversal of 18113601 is 10631181.

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 18113601 - 2⁵ = 18113569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18113611) 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, 274416 + ... + 274481.

It is an arithmetic number, because the mean of its divisors is an integer number (3293388).

Almost surely, 2^18113601 is an apocalyptic number.

18113601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18113601 is a deficient number, since it is larger than the sum of its proper divisors (8233503).

18113601 is a wasteful number, since it uses less digits than its factorization.

18113601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548911.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 18113601 is about 4256.0076362713. The cubic root of 18113601 is about 262.6243148138.

Adding to 18113601 its reverse (10631181), we get a palindrome (28744782).

The spelling of 18113601 in words is "eighteen million, one hundred thirteen thousand, six hundred one".