2171610863 has 2 divisors, whose sum is σ = 2171610864. Its totient is φ = 2171610862.

The previous prime is 2171610851. The next prime is 2171610911. The reversal of 2171610863 is 3680161712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2171610863 - 2²⁴ = 2154833647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171610823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085805431 + 1085805432.

It is an arithmetic number, because the mean of its divisors is an integer number (1085805432).

Almost surely, 2^2171610863 is an apocalyptic number.

2171610863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171610863 is an equidigital number, since it uses as much as digits as its factorization.

2171610863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2171610863 is about 46600.5457371478. The cubic root of 2171610863 is about 1294.9728656678.

The spelling of 2171610863 in words is "two billion, one hundred seventy-one million, six hundred ten thousand, eight hundred sixty-three".