16385497 has 2 divisors, whose sum is σ = 16385498. Its totient is φ = 16385496.

The previous prime is 16385491. The next prime is 16385503. The reversal of 16385497 is 79458361.

It is a balanced prime because it is at equal distance from previous prime (16385491) and next prime (16385503).

It can be written as a sum of positive squares in only one way, i.e., 10055241 + 6330256 = 3171^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 16385497 - 2³ = 16385489 is a prime.

It is not a weakly prime, because it can be changed into another prime (16385491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8192748 + 8192749.

It is an arithmetic number, because the mean of its divisors is an integer number (8192749).

Almost surely, 2^16385497 is an apocalyptic number.

It is an amenable number.

16385497 is a deficient number, since it is larger than the sum of its proper divisors (1).

16385497 is an equidigital number, since it uses as much as digits as its factorization.

16385497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 16385497 is about 4047.9003199190. The cubic root of 16385497 is about 253.9919035591.

The spelling of 16385497 in words is "sixteen million, three hundred eighty-five thousand, four hundred ninety-seven".