18842001 has 16 divisors (see below), whose sum is σ = 27252288. Its totient is φ = 11532800.

The previous prime is 18841997. The next prime is 18842003. The reversal of 18842001 is 10024881.

It is not a de Polignac number, because 18842001 - 2² = 18841997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18842003) 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 15 ways as a sum of consecutive naturals, for example, 2415 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (1703268).

Almost surely, 2^18842001 is an apocalyptic number.

It is an amenable number.

18842001 is a deficient number, since it is larger than the sum of its proper divisors (8410287).

18842001 is a wasteful number, since it uses less digits than its factorization.

18842001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 18842001 is about 4340.7373797547. The cubic root of 18842001 is about 266.0984475516.

Adding to 18842001 its reverse (10024881), we get a palindrome (28866882).

The spelling of 18842001 in words is "eighteen million, eight hundred forty-two thousand, one".