109000191 has 16 divisors (see below), whose sum is σ = 149280768. Its totient is φ = 70711200.

The previous prime is 109000189. The next prime is 109000231. The reversal of 109000191 is 191000901.

It is not a de Polignac number, because 109000191 - 2¹ = 109000189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109000091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23386 + ... + 27656.

It is an arithmetic number, because the mean of its divisors is an integer number (9330048).

Almost surely, 2^109000191 is an apocalyptic number.

109000191 is a deficient number, since it is larger than the sum of its proper divisors (40280577).

109000191 is a wasteful number, since it uses less digits than its factorization.

109000191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 109000191 is about 10440.3156561476. The cubic root of 109000191 is about 477.6858971185.

The spelling of 109000191 in words is "one hundred nine million, one hundred ninety-one", and thus it is an aban number.