109448181 has 12 divisors (see below), whose sum is σ = 158329600. Its totient is φ = 72855720.

The previous prime is 109448179. The next prime is 109448221. The reversal of 109448181 is 181844901.

109448181 is a `hidden beast` number, since 10 + 94 + 481 + 81 = 666.

It is not a de Polignac number, because 109448181 - 2¹ = 109448179 is a prime.

It is a super-2 number, since 2×109448181² = 23957808648417522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109448161) 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, 2581 + ... + 15018.

Almost surely, 2^109448181 is an apocalyptic number.

It is an amenable number.

109448181 is a deficient number, since it is larger than the sum of its proper divisors (48881419).

109448181 is a wasteful number, since it uses less digits than its factorization.

109448181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18296 (or 18293 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 109448181 is about 10461.7484676320. The cubic root of 109448181 is about 478.3394311268.

The spelling of 109448181 in words is "one hundred nine million, four hundred forty-eight thousand, one hundred eighty-one".