2105346691 has 32 divisors (see below), whose sum is σ = 2621030400. Its totient is φ = 1684464768.

The previous prime is 2105346689. The next prime is 2105346701. The reversal of 2105346691 is 1966435012.

It is not a de Polignac number, because 2105346691 - 2¹ = 2105346689 is a prime.

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 2105346691.

It is not an unprimeable number, because it can be changed into a prime (2105340691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739116 + ... + 741958.

It is an arithmetic number, because the mean of its divisors is an integer number (81907200).

Almost surely, 2^2105346691 is an apocalyptic number.

2105346691 is a deficient number, since it is larger than the sum of its proper divisors (515683709).

2105346691 is a wasteful number, since it uses less digits than its factorization.

2105346691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2105346691 is about 45884.0570459937. The cubic root of 2105346691 is about 1281.6650472891.

The spelling of 2105346691 in words is "two billion, one hundred five million, three hundred forty-six thousand, six hundred ninety-one".