216849151 has 2 divisors, whose sum is σ = 216849152. Its totient is φ = 216849150.

The previous prime is 216849133. The next prime is 216849163. The reversal of 216849151 is 151948612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216849151 - 2¹⁹ = 216324863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216849151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216849181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108424575 + 108424576.

It is an arithmetic number, because the mean of its divisors is an integer number (108424576).

Almost surely, 2^216849151 is an apocalyptic number.

216849151 is a deficient number, since it is larger than the sum of its proper divisors (1).

216849151 is an equidigital number, since it uses as much as digits as its factorization.

216849151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 216849151 is about 14725.7988238330. The cubic root of 216849151 is about 600.7852228528.

The spelling of 216849151 in words is "two hundred sixteen million, eight hundred forty-nine thousand, one hundred fifty-one".