2135905537 has 4 divisors (see below), whose sum is σ = 2188000836. Its totient is φ = 2083810240.

The previous prime is 2135905489. The next prime is 2135905543. The reversal of 2135905537 is 7355095312.

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 68293696 + 2067611841 = 8264^2 + 45471^2 .

It is not a de Polignac number, because 2135905537 - 2¹⁵ = 2135872769 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 2135905537.

It is not an unprimeable number, because it can be changed into a prime (2135905237) 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 3 ways as a sum of consecutive naturals, for example, 26047588 + ... + 26047669.

It is an arithmetic number, because the mean of its divisors is an integer number (547000209).

Almost surely, 2^2135905537 is an apocalyptic number.

It is an amenable number.

2135905537 is a deficient number, since it is larger than the sum of its proper divisors (52095299).

2135905537 is an equidigital number, since it uses as much as digits as its factorization.

2135905537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52095298.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 2135905537 is about 46215.8580684163. The cubic root of 2135905537 is about 1287.8363540353.

The spelling of 2135905537 in words is "two billion, one hundred thirty-five million, nine hundred five thousand, five hundred thirty-seven".