198876541 has 2 divisors, whose sum is σ = 198876542. Its totient is φ = 198876540.

The previous prime is 198876533. The next prime is 198876583. The reversal of 198876541 is 145678891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191933316 + 6943225 = 13854^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 198876541 - 2³ = 198876533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198876241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99438270 + 99438271.

It is an arithmetic number, because the mean of its divisors is an integer number (99438271).

Almost surely, 2^198876541 is an apocalyptic number.

It is an amenable number.

198876541 is a deficient number, since it is larger than the sum of its proper divisors (1).

198876541 is an equidigital number, since it uses as much as digits as its factorization.

198876541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 198876541 is about 14102.3594125238. The cubic root of 198876541 is about 583.7064862172.

The spelling of 198876541 in words is "one hundred ninety-eight million, eight hundred seventy-six thousand, five hundred forty-one".