2135795729 has 4 divisors (see below), whose sum is σ = 2140869300. Its totient is φ = 2130722160.

The previous prime is 2135795723. The next prime is 2135795771. The reversal of 2135795729 is 9275975312.

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 968890129 + 1166905600 = 31127^2 + 34160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135795729 - 2⁴ = 2135795713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2135795723) 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, 2536154 + ... + 2536995.

It is an arithmetic number, because the mean of its divisors is an integer number (535217325).

Almost surely, 2^2135795729 is an apocalyptic number.

It is an amenable number.

2135795729 is a deficient number, since it is larger than the sum of its proper divisors (5073571).

2135795729 is an equidigital number, since it uses as much as digits as its factorization.

2135795729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073570.

The product of its digits is 1190700, while the sum is 50.

The square root of 2135795729 is about 46214.6700626543. The cubic root of 2135795729 is about 1287.8142842145.

The spelling of 2135795729 in words is "two billion, one hundred thirty-five million, seven hundred ninety-five thousand, seven hundred twenty-nine".