2100195065 has 16 divisors (see below), whose sum is σ = 2588701248. Its totient is φ = 1635116736.

The previous prime is 2100195059. The next prime is 2100195089. The reversal of 2100195065 is 5605910012.

It is a cyclic number.

It is not a de Polignac number, because 2100195065 - 2⁴ = 2100195049 is a prime.

It is a super-2 number, since 2×2100195065² = 8821638622100708450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9962 + ... + 65571.

It is an arithmetic number, because the mean of its divisors is an integer number (161793828).

Almost surely, 2^2100195065 is an apocalyptic number.

It is an amenable number.

2100195065 is a deficient number, since it is larger than the sum of its proper divisors (488506183).

2100195065 is an equidigital number, since it uses as much as digits as its factorization.

2100195065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75688.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 2100195065 is about 45827.8852337744. The cubic root of 2100195065 is about 1280.6188139464.

The spelling of 2100195065 in words is "two billion, one hundred million, one hundred ninety-five thousand, sixty-five".