18360001 has 4 divisors (see below), whose sum is σ = 20029104. Its totient is φ = 16690900.

The previous prime is 18359981. The next prime is 18360007. The reversal of 18360001 is 10006381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18360001 - 2¹⁵ = 18327233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18360007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834535 + ... + 834556.

It is an arithmetic number, because the mean of its divisors is an integer number (5007276).

Almost surely, 2^18360001 is an apocalyptic number.

18360001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18360001 is a deficient number, since it is larger than the sum of its proper divisors (1669103).

18360001 is a wasteful number, since it uses less digits than its factorization.

18360001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669102.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 18360001 is about 4284.8571738157. The cubic root of 18360001 is about 263.8097851191.

Adding to 18360001 its reverse (10006381), we get a palindrome (28366382).

The spelling of 18360001 in words is "eighteen million, three hundred sixty thousand, one".