18051106 has 4 divisors (see below), whose sum is σ = 27076662. Its totient is φ = 9025552.

The previous prime is 18051101. The next prime is 18051107. The reversal of 18051106 is 60115081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60115081 = 13 ⋅4624237.

It can be written as a sum of positive squares in only one way, i.e., 17986081 + 65025 = 4241^2 + 255^2 .

It is not an unprimeable number, because it can be changed into a prime (18051101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4512775 + ... + 4512778.

Almost surely, 2^18051106 is an apocalyptic number.

18051106 is a deficient number, since it is larger than the sum of its proper divisors (9025556).

18051106 is an equidigital number, since it uses as much as digits as its factorization.

18051106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9025555.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 18051106 is about 4248.6593179496. The cubic root of 18051106 is about 262.3219339609.

Adding to 18051106 its reverse (60115081), we get a palindrome (78166187).

The spelling of 18051106 in words is "eighteen million, fifty-one thousand, one hundred six".