2109535813 has 16 divisors (see below), whose sum is σ = 2694222720. Its totient is φ = 1603699200.

The previous prime is 2109535807. The next prime is 2109535829. The reversal of 2109535813 is 3185359012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2109535813 - 2¹³ = 2109527621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109535013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330948 + ... + 337261.

It is an arithmetic number, because the mean of its divisors is an integer number (168388920).

Almost surely, 2^2109535813 is an apocalyptic number.

It is an amenable number.

2109535813 is a deficient number, since it is larger than the sum of its proper divisors (584686907).

2109535813 is a wasteful number, since it uses less digits than its factorization.

2109535813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668268.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 2109535813 is about 45929.6833540141. The cubic root of 2109535813 is about 1282.5145501556.

The spelling of 2109535813 in words is "two billion, one hundred nine million, five hundred thirty-five thousand, eight hundred thirteen".