2105352009 has 24 divisors (see below), whose sum is σ = 3144409632. Its totient is φ = 1356511680.

The previous prime is 2105352001. The next prime is 2105352023. The reversal of 2105352009 is 9002535012.

It is not a de Polignac number, because 2105352009 - 2³ = 2105352001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105352001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12822 + ... + 66144.

It is an arithmetic number, because the mean of its divisors is an integer number (131017068).

Almost surely, 2^2105352009 is an apocalyptic number.

It is an amenable number.

2105352009 is a deficient number, since it is larger than the sum of its proper divisors (1039057623).

2105352009 is a wasteful number, since it uses less digits than its factorization.

2105352009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53477 (or 53474 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 2105352009 is about 45884.1149963688. The cubic root of 2105352009 is about 1281.6661264287. Note that the first 3 decimals are identical.

The spelling of 2105352009 in words is "two billion, one hundred five million, three hundred fifty-two thousand, nine".