16378613 has 2 divisors, whose sum is σ = 16378614. Its totient is φ = 16378612.

The previous prime is 16378573. The next prime is 16378673. The reversal of 16378613 is 31687361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 4695889 = 3418^2 + 2167^2 .

It is a cyclic number.

It is not a de Polignac number, because 16378613 - 2⁸ = 16378357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16378673) 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, 8189306 + 8189307.

It is an arithmetic number, because the mean of its divisors is an integer number (8189307).

Almost surely, 2^16378613 is an apocalyptic number.

It is an amenable number.

16378613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16378613 is an equidigital number, since it uses as much as digits as its factorization.

16378613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 16378613 is about 4047.0499132084. The cubic root of 16378613 is about 253.9563289046.

The spelling of 16378613 in words is "sixteen million, three hundred seventy-eight thousand, six hundred thirteen".