16853849 has 2 divisors, whose sum is σ = 16853850. Its totient is φ = 16853848.

The previous prime is 16853839. The next prime is 16853857. The reversal of 16853849 is 94835861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13987600 + 2866249 = 3740^2 + 1693^2 .

It is a cyclic number.

It is not a de Polignac number, because 16853849 - 2¹² = 16849753 is a prime.

It is a super-2 number, since 2×16853849² = 568104452229602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16853839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426924 + 8426925.

It is an arithmetic number, because the mean of its divisors is an integer number (8426925).

Almost surely, 2^16853849 is an apocalyptic number.

It is an amenable number.

16853849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16853849 is an equidigital number, since it uses as much as digits as its factorization.

16853849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 16853849 is about 4105.3439563574. The cubic root of 16853849 is about 256.3891836384.

The spelling of 16853849 in words is "sixteen million, eight hundred fifty-three thousand, eight hundred forty-nine".