2135396643 has 16 divisors (see below), whose sum is σ = 3100396800. Its totient is φ = 1302164640.

The previous prime is 2135396587. The next prime is 2135396723. The reversal of 2135396643 is 3466935312.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2135396643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2135396595 and 2135396604.

It is not an unprimeable number, because it can be changed into a prime (2135396443) 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 15 ways as a sum of consecutive naturals, for example, 644263 + ... + 647568.

It is an arithmetic number, because the mean of its divisors is an integer number (193774800).

Almost surely, 2^2135396643 is an apocalyptic number.

2135396643 is a deficient number, since it is larger than the sum of its proper divisors (965000157).

2135396643 is a wasteful number, since it uses less digits than its factorization.

2135396643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291882.

The product of its digits is 349920, while the sum is 42.

The square root of 2135396643 is about 46210.3521194115. The cubic root of 2135396643 is about 1287.7340673256.

The spelling of 2135396643 in words is "two billion, one hundred thirty-five million, three hundred ninety-six thousand, six hundred forty-three".