109144161 has 12 divisors (see below), whose sum is σ = 180174592. Its totient is φ = 62368056.

The previous prime is 109144129. The next prime is 109144163. The reversal of 109144161 is 161441901.

It is not a de Polignac number, because 109144161 - 2⁵ = 109144129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109144163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866161 + ... + 866286.

Almost surely, 2^109144161 is an apocalyptic number.

It is an amenable number.

109144161 is a deficient number, since it is larger than the sum of its proper divisors (71030431).

109144161 is a wasteful number, since it uses less digits than its factorization.

109144161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732460 (or 1732457 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 109144161 is about 10447.2082873847. The cubic root of 109144161 is about 477.8961174904.

The spelling of 109144161 in words is "one hundred nine million, one hundred forty-four thousand, one hundred sixty-one".