18906001 has 16 divisors (see below), whose sum is σ = 20487168. Its totient is φ = 17409600.

The previous prime is 18905963. The next prime is 18906031. The reversal of 18906001 is 10060981.

It is a de Polignac number, because none of the positive numbers 2^k-18906001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18906031) 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, 60636 + ... + 60946.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^18906001 is an apocalyptic number.

It is an amenable number.

18906001 is a deficient number, since it is larger than the sum of its proper divisors (1581167).

18906001 is a wasteful number, since it uses less digits than its factorization.

18906001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 18906001 is about 4348.1031496504. The cubic root of 18906001 is about 266.3993896660.

Adding to 18906001 its reverse (10060981), we get a palindrome (28966982).

The spelling of 18906001 in words is "eighteen million, nine hundred six thousand, one".