18073766 has 8 divisors (see below), whose sum is σ = 27277464. Its totient is φ = 8981280.

The previous prime is 18073763. The next prime is 18073799. The reversal of 18073766 is 66737081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18073766² = 653322034845512, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073763) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27395 + ... + 28046.

It is an arithmetic number, because the mean of its divisors is an integer number (3409683).

Almost surely, 2^18073766 is an apocalyptic number.

18073766 is a deficient number, since it is larger than the sum of its proper divisors (9203698).

18073766 is a wasteful number, since it uses less digits than its factorization.

18073766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55606.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 18073766 is about 4251.3252051566. The cubic root of 18073766 is about 262.4316544668.

The spelling of 18073766 in words is "eighteen million, seventy-three thousand, seven hundred sixty-six".