198433541 has 2 divisors, whose sum is σ = 198433542. Its totient is φ = 198433540.

The previous prime is 198433463. The next prime is 198433559. The reversal of 198433541 is 145334891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 50908225 = 12146^2 + 7135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198433541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198433495 and 198433504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198433561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99216770 + 99216771.

It is an arithmetic number, because the mean of its divisors is an integer number (99216771).

Almost surely, 2^198433541 is an apocalyptic number.

It is an amenable number.

198433541 is a deficient number, since it is larger than the sum of its proper divisors (1).

198433541 is an equidigital number, since it uses as much as digits as its factorization.

198433541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 198433541 is about 14086.6440645031. The cubic root of 198433541 is about 583.2727594970.

The spelling of 198433541 in words is "one hundred ninety-eight million, four hundred thirty-three thousand, five hundred forty-one".