109193765 has 16 divisors (see below), whose sum is σ = 138613248. Its totient is φ = 82406016.

The previous prime is 109193761. The next prime is 109193767. The reversal of 109193765 is 567391901.

It is a cyclic number.

It is not a de Polignac number, because 109193765 - 2² = 109193761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109193761) 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, 1892 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (8663328).

Almost surely, 2^109193765 is an apocalyptic number.

It is an amenable number.

109193765 is a deficient number, since it is larger than the sum of its proper divisors (29419483).

109193765 is a wasteful number, since it uses less digits than its factorization.

109193765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13108.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 109193765 is about 10449.5820490582. The cubic root of 109193765 is about 477.9685048371.

The spelling of 109193765 in words is "one hundred nine million, one hundred ninety-three thousand, seven hundred sixty-five".