16366081 has 2 divisors, whose sum is σ = 16366082. Its totient is φ = 16366080.

The previous prime is 16366079. The next prime is 16366123. The reversal of 16366081 is 18066361.

16366081 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., 13068225 + 3297856 = 3615^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 16366081 - 2¹ = 16366079 is a prime.

It is a super-2 number, since 2×16366081² = 535697214597122, which contains 22 as substring.

Together with 16366079, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16366001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8183040 + 8183041.

It is an arithmetic number, because the mean of its divisors is an integer number (8183041).

Almost surely, 2^16366081 is an apocalyptic number.

It is an amenable number.

16366081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16366081 is an equidigital number, since it uses as much as digits as its factorization.

16366081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16366081 is about 4045.5013286365. The cubic root of 16366081 is about 253.8915413109.

The spelling of 16366081 in words is "sixteen million, three hundred sixty-six thousand, eighty-one".