18109076161 has 8 divisors (see below), whose sum is σ = 20079214848. Its totient is φ = 16192914000.

The previous prime is 18109076113. The next prime is 18109076231. The reversal of 18109076161 is 16167090181.

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 18109076161 - 2¹⁹ = 18108551873 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18109076101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13493425 + ... + 13494766.

It is an arithmetic number, because the mean of its divisors is an integer number (2509901856).

Almost surely, 2^18109076161 is an apocalyptic number.

18109076161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18109076161 is a deficient number, since it is larger than the sum of its proper divisors (1970138687).

18109076161 is a wasteful number, since it uses less digits than its factorization.

18109076161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26988263.

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 18109076161 in words is "eighteen billion, one hundred nine million, seventy-six thousand, one hundred sixty-one".