18069765 has 16 divisors (see below), whose sum is σ = 33042048. Its totient is φ = 8260416.

The previous prime is 18069731. The next prime is 18069769. The reversal of 18069765 is 56796081.

It is not a de Polignac number, because 18069765 - 2⁹ = 18069253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18069769) 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 15 ways as a sum of consecutive naturals, for example, 85942 + ... + 86151.

It is an arithmetic number, because the mean of its divisors is an integer number (2065128).

Almost surely, 2^18069765 is an apocalyptic number.

18069765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18069765 is a deficient number, since it is larger than the sum of its proper divisors (14972283).

18069765 is a wasteful number, since it uses less digits than its factorization.

18069765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172108.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 18069765 is about 4250.8546199559. The cubic root of 18069765 is about 262.4122881555.

The spelling of 18069765 in words is "eighteen million, sixty-nine thousand, seven hundred sixty-five".