16814261 has 2 divisors, whose sum is σ = 16814262. Its totient is φ = 16814260.

The previous prime is 16814251. The next prime is 16814263. The reversal of 16814261 is 16241861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 8375236 = 2905^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 16814261 - 2¹⁸ = 16552117 is a prime.

It is a super-2 number, since 2×16814261² = 565438745952242, which contains 22 as substring.

Together with 16814263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16814263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8407130 + 8407131.

It is an arithmetic number, because the mean of its divisors is an integer number (8407131).

Almost surely, 2^16814261 is an apocalyptic number.

It is an amenable number.

16814261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16814261 is an equidigital number, since it uses as much as digits as its factorization.

16814261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 16814261 is about 4100.5196012213. The cubic root of 16814261 is about 256.1882821025.

The spelling of 16814261 in words is "sixteen million, eight hundred fourteen thousand, two hundred sixty-one".