109635161 has 4 divisors (see below), whose sum is σ = 111967872. Its totient is φ = 107302452.

The previous prime is 109635151. The next prime is 109635179. The reversal of 109635161 is 161536901.

It is a happy number.

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 109635161 - 2¹⁴ = 109618777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109635131) 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, 1166285 + ... + 1166378.

It is an arithmetic number, because the mean of its divisors is an integer number (27991968).

Almost surely, 2^109635161 is an apocalyptic number.

It is an amenable number.

109635161 is a deficient number, since it is larger than the sum of its proper divisors (2332711).

109635161 is an equidigital number, since it uses as much as digits as its factorization.

109635161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332710.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 109635161 is about 10470.6810189214. The cubic root of 109635161 is about 478.6116726619.

The spelling of 109635161 in words is "one hundred nine million, six hundred thirty-five thousand, one hundred sixty-one".