2105055613 has 4 divisors (see below), whose sum is σ = 2106530140. Its totient is φ = 2103581088.

The previous prime is 2105055587. The next prime is 2105055653. The reversal of 2105055613 is 3165505012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 291828889 + 1813226724 = 17083^2 + 42582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105055613 - 2²⁵ = 2071501181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105055653) 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, 735120 + ... + 737977.

It is an arithmetic number, because the mean of its divisors is an integer number (526632535).

Almost surely, 2^2105055613 is an apocalyptic number.

It is an amenable number.

2105055613 is a deficient number, since it is larger than the sum of its proper divisors (1474527).

2105055613 is a wasteful number, since it uses less digits than its factorization.

2105055613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474526.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2105055613 is about 45880.8850503126. The cubic root of 2105055613 is about 1281.6059783648.

The spelling of 2105055613 in words is "two billion, one hundred five million, fifty-five thousand, six hundred thirteen".