198703594541 has 2 divisors, whose sum is σ = 198703594542. Its totient is φ = 198703594540.

The previous prime is 198703594477. The next prime is 198703594547. The reversal of 198703594541 is 145495307891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198362453641 + 341140900 = 445379^2 + 18470^2 .

It is a cyclic number.

It is not a de Polignac number, because 198703594541 - 2⁶ = 198703594477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198703594547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99351797270 + 99351797271.

It is an arithmetic number, because the mean of its divisors is an integer number (99351797271).

Almost surely, 2^198703594541 is an apocalyptic number.

It is an amenable number.

198703594541 is a deficient number, since it is larger than the sum of its proper divisors (1).

198703594541 is an equidigital number, since it uses as much as digits as its factorization.

198703594541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 198703594541 in words is "one hundred ninety-eight billion, seven hundred three million, five hundred ninety-four thousand, five hundred forty-one".