18016775 has 12 divisors (see below), whose sum is σ = 25532592. Its totient is φ = 12354240.

The previous prime is 18016759. The next prime is 18016781. The reversal of 18016775 is 57761081.

It is not a de Polignac number, because 18016775 - 2⁴ = 18016759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51302 + ... + 51651.

It is an arithmetic number, because the mean of its divisors is an integer number (2127716).

Almost surely, 2^18016775 is an apocalyptic number.

18016775 is a deficient number, since it is larger than the sum of its proper divisors (7515817).

18016775 is a wasteful number, since it uses less digits than its factorization.

18016775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102970 (or 102965 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 18016775 is about 4244.6171794403. The cubic root of 18016775 is about 262.1555269893.

The spelling of 18016775 in words is "eighteen million, sixteen thousand, seven hundred seventy-five".