18340201 has 4 divisors (see below), whose sum is σ = 20007504. Its totient is φ = 16672900.

The previous prime is 18340169. The next prime is 18340207. The reversal of 18340201 is 10204381.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10204381 = 11 ⋅927671.

It is a cyclic number.

It is not a de Polignac number, because 18340201 - 2⁵ = 18340169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18340207) 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, 833635 + ... + 833656.

It is an arithmetic number, because the mean of its divisors is an integer number (5001876).

Almost surely, 2^18340201 is an apocalyptic number.

18340201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18340201 is a deficient number, since it is larger than the sum of its proper divisors (1667303).

18340201 is a wasteful number, since it uses less digits than its factorization.

18340201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667302.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18340201 is about 4282.5460884852. The cubic root of 18340201 is about 263.7149174304.

Adding to 18340201 its reverse (10204381), we get a palindrome (28544582).

The spelling of 18340201 in words is "eighteen million, three hundred forty thousand, two hundred one".