16351397 has 2 divisors, whose sum is σ = 16351398. Its totient is φ = 16351396.

The previous prime is 16351351. The next prime is 16351403. The reversal of 16351397 is 79315361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16008001 + 343396 = 4001^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 16351397 - 2⁸ = 16351141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16354397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8175698 + 8175699.

It is an arithmetic number, because the mean of its divisors is an integer number (8175699).

Almost surely, 2^16351397 is an apocalyptic number.

It is an amenable number.

16351397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16351397 is an equidigital number, since it uses as much as digits as its factorization.

16351397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 35.

The square root of 16351397 is about 4043.6860659552. The cubic root of 16351397 is about 253.8155862724.

The spelling of 16351397 in words is "sixteen million, three hundred fifty-one thousand, three hundred ninety-seven".