199876541 has 2 divisors, whose sum is σ = 199876542. Its totient is φ = 199876540.

The previous prime is 199876519. The next prime is 199876549. The reversal of 199876541 is 145678991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188512900 + 11363641 = 13730^2 + 3371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199876541 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199876541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199876549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99938270 + 99938271.

It is an arithmetic number, because the mean of its divisors is an integer number (99938271).

Almost surely, 2^199876541 is an apocalyptic number.

It is an amenable number.

199876541 is a deficient number, since it is larger than the sum of its proper divisors (1).

199876541 is an equidigital number, since it uses as much as digits as its factorization.

199876541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The square root of 199876541 is about 14137.7700151049. The cubic root of 199876541 is about 584.6831907720.

The spelling of 199876541 in words is "one hundred ninety-nine million, eight hundred seventy-six thousand, five hundred forty-one".