18126071 has 4 divisors (see below), whose sum is σ = 18135144. Its totient is φ = 18117000.

The previous prime is 18126061. The next prime is 18126079. The reversal of 18126071 is 17062181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18126071 - 2¹⁰ = 18125047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18126071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18126079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80 + ... + 6021.

It is an arithmetic number, because the mean of its divisors is an integer number (4533786).

Almost surely, 2^18126071 is an apocalyptic number.

18126071 is a deficient number, since it is larger than the sum of its proper divisors (9073).

18126071 is an equidigital number, since it uses as much as digits as its factorization.

18126071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 18126071 is about 4257.4723721946. The cubic root of 18126071 is about 262.6845674010.

The spelling of 18126071 in words is "eighteen million, one hundred twenty-six thousand, seventy-one".