18164142706 has 4 divisors (see below), whose sum is σ = 27246214062. Its totient is φ = 9082071352.

The previous prime is 18164142679. The next prime is 18164142707. The reversal of 18164142706 is 60724146181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60724146181 = 353 ⋅172023077.

It can be written as a sum of positive squares in only one way, i.e., 17940191481 + 223951225 = 133941^2 + 14965^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18164142707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4541035675 + ... + 4541035678.

Almost surely, 2^18164142706 is an apocalyptic number.

18164142706 is a deficient number, since it is larger than the sum of its proper divisors (9082071356).

18164142706 is an equidigital number, since it uses as much as digits as its factorization.

18164142706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082071355.

The product of its (nonzero) digits is 64512, while the sum is 40.

Adding to 18164142706 its reverse (60724146181), we get a palindrome (78888288887).

The spelling of 18164142706 in words is "eighteen billion, one hundred sixty-four million, one hundred forty-two thousand, seven hundred six".