16064381 has 2 divisors, whose sum is σ = 16064382. Its totient is φ = 16064380.

The previous prime is 16064359. The next prime is 16064387. The reversal of 16064381 is 18346061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15531481 + 532900 = 3941^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 16064381 - 2⁶ = 16064317 is a prime.

It is a super-2 number, since 2×16064381² = 516128673826322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16064387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8032190 + 8032191.

It is an arithmetic number, because the mean of its divisors is an integer number (8032191).

Almost surely, 2^16064381 is an apocalyptic number.

It is an amenable number.

16064381 is a deficient number, since it is larger than the sum of its proper divisors (1).

16064381 is an equidigital number, since it uses as much as digits as its factorization.

16064381 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16064381 is about 4008.0395457131. The cubic root of 16064381 is about 252.3217367395.

The spelling of 16064381 in words is "sixteen million, sixty-four thousand, three hundred eighty-one".