16306481 has 2 divisors, whose sum is σ = 16306482. Its totient is φ = 16306480.

The previous prime is 16306453. The next prime is 16306489. The reversal of 16306481 is 18460361.

16306481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 1221025 = 3884^2 + 1105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16306481 is a prime.

It is a super-2 number, since 2×16306481² = 531802645206722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16306489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8153240 + 8153241.

It is an arithmetic number, because the mean of its divisors is an integer number (8153241).

Almost surely, 2^16306481 is an apocalyptic number.

It is an amenable number.

16306481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16306481 is an equidigital number, since it uses as much as digits as its factorization.

16306481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 16306481 is about 4038.1284031095. The cubic root of 16306481 is about 253.5829693390.

The spelling of 16306481 in words is "sixteen million, three hundred six thousand, four hundred eighty-one".