18061169 has 4 divisors (see below), whose sum is σ = 20641344. Its totient is φ = 15480996.

The previous prime is 18061163. The next prime is 18061177. The reversal of 18061169 is 96116081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96116081 = 47 ⋅2045023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18061169 is a prime.

It is a super-2 number, since 2×18061169² = 652411651293122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18061163) 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, 1290077 + ... + 1290090.

It is an arithmetic number, because the mean of its divisors is an integer number (5160336).

Almost surely, 2^18061169 is an apocalyptic number.

It is an amenable number.

18061169 is a deficient number, since it is larger than the sum of its proper divisors (2580175).

18061169 is an equidigital number, since it uses as much as digits as its factorization.

18061169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580174.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 18061169 is about 4249.8434088799. The cubic root of 18061169 is about 262.3706706836.

The spelling of 18061169 in words is "eighteen million, sixty-one thousand, one hundred sixty-nine".