16105849 has 2 divisors, whose sum is σ = 16105850. Its totient is φ = 16105848.

The previous prime is 16105847. The next prime is 16105861. The reversal of 16105849 is 94850161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 6985449 = 3020^2 + 2643^2 .

It is a cyclic number.

It is not a de Polignac number, because 16105849 - 2¹ = 16105847 is a prime.

Together with 16105847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16105847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8052924 + 8052925.

It is an arithmetic number, because the mean of its divisors is an integer number (8052925).

Almost surely, 2^16105849 is an apocalyptic number.

It is an amenable number.

16105849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105849 is an equidigital number, since it uses as much as digits as its factorization.

16105849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 16105849 is about 4013.2093142521. The cubic root of 16105849 is about 252.5386615309.

The spelling of 16105849 in words is "sixteen million, one hundred five thousand, eight hundred forty-nine".