18506006 has 8 divisors (see below), whose sum is σ = 28436184. Its totient is φ = 9027280.

The previous prime is 18505969. The next prime is 18506021. The reversal of 18506006 is 60060581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112760 + ... + 112923.

It is an arithmetic number, because the mean of its divisors is an integer number (3554523).

Almost surely, 2^18506006 is an apocalyptic number.

18506006 is a deficient number, since it is larger than the sum of its proper divisors (9930178).

18506006 is a wasteful number, since it uses less digits than its factorization.

18506006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225726.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18506006 is about 4301.8607601827. The cubic root of 18506006 is about 264.5072414139.

Adding to 18506006 its reverse (60060581), we get a palindrome (78566587).

The spelling of 18506006 in words is "eighteen million, five hundred six thousand, six".