18011006 has 16 divisors (see below), whose sum is σ = 29274000. Its totient is φ = 8310744.

The previous prime is 18010999. The next prime is 18011009. The reversal of 18011006 is 60011081.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18011009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2345 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (1829625).

Almost surely, 2^18011006 is an apocalyptic number.

18011006 is a deficient number, since it is larger than the sum of its proper divisors (11262994).

18011006 is an equidigital number, since it uses as much as digits as its factorization.

18011006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140 (or 4114 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 18011006 is about 4243.9375584473. The cubic root of 18011006 is about 262.1275431301.

Adding to 18011006 its reverse (60011081), we get a palindrome (78022087).

The spelling of 18011006 in words is "eighteen million, eleven thousand, six".