18069161 has 8 divisors (see below), whose sum is σ = 19758144. Its totient is φ = 16387920.

The previous prime is 18069137. The next prime is 18069167. The reversal of 18069161 is 16196081.

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

It is a cyclic number.

It is not a de Polignac number, because 18069161 - 2⁶ = 18069097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18069167) 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 7 ways as a sum of consecutive naturals, for example, 3671 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (2469768).

Almost surely, 2^18069161 is an apocalyptic number.

18069161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18069161 is a deficient number, since it is larger than the sum of its proper divisors (1688983).

18069161 is a wasteful number, since it uses less digits than its factorization.

18069161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871.

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

The square root of 18069161 is about 4250.7835748248. The cubic root of 18069161 is about 262.4093643251.

Subtracting from 18069161 its reverse (16196081), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 18069161 in words is "eighteen million, sixty-nine thousand, one hundred sixty-one".