18079069 has 4 divisors (see below), whose sum is σ = 18095680. Its totient is φ = 18062460.

The previous prime is 18079057. The next prime is 18079091. The reversal of 18079069 is 96097081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18079069 - 2¹¹ = 18077021 is a prime.

It is a super-2 number, since 2×18079069² = 653705471813522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6549 + ... + 8890.

It is an arithmetic number, because the mean of its divisors is an integer number (4523920).

Almost surely, 2^18079069 is an apocalyptic number.

It is an amenable number.

18079069 is a deficient number, since it is larger than the sum of its proper divisors (16611).

18079069 is a wasteful number, since it uses less digits than its factorization.

18079069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16610.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 18079069 is about 4251.9488472934. The cubic root of 18079069 is about 262.4573185329.

The spelling of 18079069 in words is "eighteen million, seventy-nine thousand, sixty-nine".