16196881 has 2 divisors, whose sum is σ = 16196882. Its totient is φ = 16196880.

The previous prime is 16196879. The next prime is 16196893. The reversal of 16196881 is 18869161.

16196881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16160400 + 36481 = 4020^2 + 191^2 .

It is an emirp because it is prime and its reverse (18869161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16196881 - 2¹ = 16196879 is a prime.

It is a super-2 number, since 2×16196881² = 524677908256322, which contains 22 as substring.

Together with 16196879, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16196981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8098440 + 8098441.

It is an arithmetic number, because the mean of its divisors is an integer number (8098441).

Almost surely, 2^16196881 is an apocalyptic number.

It is an amenable number.

16196881 is a deficient number, since it is larger than the sum of its proper divisors (1).

16196881 is an equidigital number, since it uses as much as digits as its factorization.

16196881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 40.

The square root of 16196881 is about 4024.5348799582. The cubic root of 16196881 is about 253.0135598663.

The spelling of 16196881 in words is "sixteen million, one hundred ninety-six thousand, eight hundred eighty-one".