109191061 has 24 divisors (see below), whose sum is σ = 134529120. Its totient is φ = 88214112.

The previous prime is 109191053. The next prime is 109191073. The reversal of 109191061 is 160191901.

It is not a de Polignac number, because 109191061 - 2³ = 109191053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109191041) 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 23 ways as a sum of consecutive naturals, for example, 60210 + ... + 61996.

It is an arithmetic number, because the mean of its divisors is an integer number (5605380).

Almost surely, 2^109191061 is an apocalyptic number.

It is an amenable number.

109191061 is a deficient number, since it is larger than the sum of its proper divisors (25338059).

109191061 is a wasteful number, since it uses less digits than its factorization.

109191061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1866 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 109191061 is about 10449.4526650921. The cubic root of 109191061 is about 477.9645594424.

The spelling of 109191061 in words is "one hundred nine million, one hundred ninety-one thousand, sixty-one".