2171163433 has 4 divisors (see below), whose sum is σ = 2176745220. Its totient is φ = 2165581648.

The previous prime is 2171163419. The next prime is 2171163437. The reversal of 2171163433 is 3343611712.

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 193404649 + 1977758784 = 13907^2 + 44472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2171163433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2171163395 and 2171163404.

It is not an unprimeable number, because it can be changed into a prime (2171163437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790310 + ... + 2791087.

It is an arithmetic number, because the mean of its divisors is an integer number (544186305).

Almost surely, 2^2171163433 is an apocalyptic number.

It is an amenable number.

2171163433 is a deficient number, since it is larger than the sum of its proper divisors (5581787).

2171163433 is an equidigital number, since it uses as much as digits as its factorization.

2171163433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581786.

The product of its digits is 9072, while the sum is 31.

The square root of 2171163433 is about 46595.7447949917. The cubic root of 2171163433 is about 1294.8839225524.

The spelling of 2171163433 in words is "two billion, one hundred seventy-one million, one hundred sixty-three thousand, four hundred thirty-three".