216091741 has 2 divisors, whose sum is σ = 216091742. Its totient is φ = 216091740.

The previous prime is 216091717. The next prime is 216091783. The reversal of 216091741 is 147190612.

216091741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108368100 + 107723641 = 10410^2 + 10379^2 .

It is a cyclic number.

It is not a de Polignac number, because 216091741 - 2¹¹ = 216089693 is a prime.

It is a super-2 number, since 2×216091741² = 93391281056822162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216091241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108045870 + 108045871.

It is an arithmetic number, because the mean of its divisors is an integer number (108045871).

Almost surely, 2^216091741 is an apocalyptic number.

It is an amenable number.

216091741 is a deficient number, since it is larger than the sum of its proper divisors (1).

216091741 is an equidigital number, since it uses as much as digits as its factorization.

216091741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 216091741 is about 14700.0592175678. The cubic root of 216091741 is about 600.0849333470.

The spelling of 216091741 in words is "two hundred sixteen million, ninety-one thousand, seven hundred forty-one".