2172154163 has 2 divisors, whose sum is σ = 2172154164. Its totient is φ = 2172154162.

The previous prime is 2172154121. The next prime is 2172154183. The reversal of 2172154163 is 3614512712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172154163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2172154183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086077081 + 1086077082.

It is an arithmetic number, because the mean of its divisors is an integer number (1086077082).

Almost surely, 2^2172154163 is an apocalyptic number.

2172154163 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172154163 is an equidigital number, since it uses as much as digits as its factorization.

2172154163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 2172154163 is about 46606.3747034673. The cubic root of 2172154163 is about 1295.0808500379.

Adding to 2172154163 its reverse (3614512712), we get a palindrome (5786666875).

The spelling of 2172154163 in words is "two billion, one hundred seventy-two million, one hundred fifty-four thousand, one hundred sixty-three".