1109785002185 has 16 divisors (see below), whose sum is σ = 1360188502272. Its totient is φ = 868866768000.

The previous prime is 1109785002181. The next prime is 1109785002191. The reversal of 1109785002185 is 5812005879011.

It is not a de Polignac number, because 1109785002185 - 2² = 1109785002181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109785002181) 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, 2773850 + ... + 3148620.

It is an arithmetic number, because the mean of its divisors is an integer number (85011781392).

Almost surely, 2^{1109785002185} is an apocalyptic number.

It is an amenable number.

1109785002185 is a deficient number, since it is larger than the sum of its proper divisors (250403500087).

1109785002185 is a wasteful number, since it uses less digits than its factorization.

1109785002185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387424.

The product of its (nonzero) digits is 201600, while the sum is 47.

The spelling of 1109785002185 in words is "one trillion, one hundred nine billion, seven hundred eighty-five million, two thousand, one hundred eighty-five".