18621106 has 16 divisors (see below), whose sum is σ = 32060160. Its totient is φ = 7945920.

The previous prime is 18621091. The next prime is 18621139. The reversal of 18621106 is 60112681.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615 + ... + 6133.

It is an arithmetic number, because the mean of its divisors is an integer number (2003760).

Almost surely, 2^18621106 is an apocalyptic number.

18621106 is a deficient number, since it is larger than the sum of its proper divisors (13439054).

18621106 is a wasteful number, since it uses less digits than its factorization.

18621106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 18621106 is about 4315.2179550980. The cubic root of 18621106 is about 265.0544850589.

Adding to 18621106 its reverse (60112681), we get a palindrome (78733787).

The spelling of 18621106 in words is "eighteen million, six hundred twenty-one thousand, one hundred six".