216159329 has 2 divisors, whose sum is σ = 216159330. Its totient is φ = 216159328.

The previous prime is 216159319. The next prime is 216159337. The reversal of 216159329 is 923951612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200279104 + 15880225 = 14152^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 216159329 - 2¹⁶ = 216093793 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 216159292 and 216159301.

It is not a weakly prime, because it can be changed into another prime (216159319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108079664 + 108079665.

It is an arithmetic number, because the mean of its divisors is an integer number (108079665).

Almost surely, 2^216159329 is an apocalyptic number.

It is an amenable number.

216159329 is a deficient number, since it is larger than the sum of its proper divisors (1).

216159329 is an equidigital number, since it uses as much as digits as its factorization.

216159329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 216159329 is about 14702.3579401401. The cubic root of 216159329 is about 600.1474905931.

The spelling of 216159329 in words is "two hundred sixteen million, one hundred fifty-nine thousand, three hundred twenty-nine".