16611841 has 2 divisors, whose sum is σ = 16611842. Its totient is φ = 16611840.

The previous prime is 16611823. The next prime is 16611851. The reversal of 16611841 is 14811661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 87616 = 4065^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 16611841 - 2¹¹ = 16609793 is a prime.

It is a super-2 number, since 2×16611841² = 551906522818562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16611811) 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, 8305920 + 8305921.

It is an arithmetic number, because the mean of its divisors is an integer number (8305921).

Almost surely, 2^16611841 is an apocalyptic number.

It is an amenable number.

16611841 is a deficient number, since it is larger than the sum of its proper divisors (1).

16611841 is an equidigital number, since it uses as much as digits as its factorization.

16611841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 16611841 is about 4075.7626280244. The cubic root of 16611841 is about 255.1560802768.

The spelling of 16611841 in words is "sixteen million, six hundred eleven thousand, eight hundred forty-one".