16191941 has 2 divisors, whose sum is σ = 16191942. Its totient is φ = 16191940.

The previous prime is 16191937. The next prime is 16191961. The reversal of 16191941 is 14919161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 2656900 = 3679^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 16191941 - 2² = 16191937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16191898 and 16191907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16191961) 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, 8095970 + 8095971.

It is an arithmetic number, because the mean of its divisors is an integer number (8095971).

Almost surely, 2^16191941 is an apocalyptic number.

It is an amenable number.

16191941 is a deficient number, since it is larger than the sum of its proper divisors (1).

16191941 is an equidigital number, since it uses as much as digits as its factorization.

16191941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 32.

The square root of 16191941 is about 4023.9210976360. The cubic root of 16191941 is about 252.9878344591.

The spelling of 16191941 in words is "sixteen million, one hundred ninety-one thousand, nine hundred forty-one".