18418601 has 4 divisors (see below), whose sum is σ = 18436992. Its totient is φ = 18400212.

The previous prime is 18418591. The next prime is 18418627. The reversal of 18418601 is 10681481.

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 18418601 - 2⁶ = 18418537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18468601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7601 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (4609248).

Almost surely, 2^18418601 is an apocalyptic number.

It is an amenable number.

18418601 is a deficient number, since it is larger than the sum of its proper divisors (18391).

18418601 is a wasteful number, since it uses less digits than its factorization.

18418601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18390.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18418601 is about 4291.6897604557. The cubic root of 18418601 is about 264.0901561151.

The spelling of 18418601 in words is "eighteen million, four hundred eighteen thousand, six hundred one".