2105670107 has 4 divisors (see below), whose sum is σ = 2109410760. Its totient is φ = 2101929456.

The previous prime is 2105670103. The next prime is 2105670199. The reversal of 2105670107 is 7010765012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2105670107 - 2² = 2105670103 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105670107.

It is not an unprimeable number, because it can be changed into a prime (2105670103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869482 + ... + 1870607.

It is an arithmetic number, because the mean of its divisors is an integer number (527352690).

Almost surely, 2^2105670107 is an apocalyptic number.

2105670107 is a deficient number, since it is larger than the sum of its proper divisors (3740653).

2105670107 is an equidigital number, since it uses as much as digits as its factorization.

2105670107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740652.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 2105670107 is about 45887.5811848914. The cubic root of 2105670107 is about 1281.7306722304.

The spelling of 2105670107 in words is "two billion, one hundred five million, six hundred seventy thousand, one hundred seven".