216149041 has 2 divisors, whose sum is σ = 216149042. Its totient is φ = 216149040.

The previous prime is 216149039. The next prime is 216149069. The reversal of 216149041 is 140941612.

It is an a-pointer prime, because the next prime (216149069) can be obtained adding 216149041 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127035441 + 89113600 = 11271^2 + 9440^2 .

It is a cyclic number.

It is not a de Polignac number, because 216149041 - 2¹ = 216149039 is a prime.

Together with 216149039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (216149341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108074520 + 108074521.

It is an arithmetic number, because the mean of its divisors is an integer number (108074521).

Almost surely, 2^216149041 is an apocalyptic number.

It is an amenable number.

216149041 is a deficient number, since it is larger than the sum of its proper divisors (1).

216149041 is an equidigital number, since it uses as much as digits as its factorization.

216149041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 216149041 is about 14702.0080601257. The cubic root of 216149041 is about 600.1379691977.

The spelling of 216149041 in words is "two hundred sixteen million, one hundred forty-nine thousand, forty-one".