2159203217 has 2 divisors, whose sum is σ = 2159203218. Its totient is φ = 2159203216.

The previous prime is 2159203181. The next prime is 2159203229. The reversal of 2159203217 is 7123029512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620545536 + 538657681 = 40256^2 + 23209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159203217 is a prime.

It is a super-3 number, since 3×2159203217³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2159203297) 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 as a sum of consecutive naturals, namely, 1079601608 + 1079601609.

It is an arithmetic number, because the mean of its divisors is an integer number (1079601609).

Almost surely, 2^2159203217 is an apocalyptic number.

It is an amenable number.

2159203217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159203217 is an equidigital number, since it uses as much as digits as its factorization.

2159203217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2159203217 is about 46467.2273435806. The cubic root of 2159203217 is about 1292.5018484585.

The spelling of 2159203217 in words is "two billion, one hundred fifty-nine million, two hundred three thousand, two hundred seventeen".