198503533 has 2 divisors, whose sum is σ = 198503534. Its totient is φ = 198503532.

The previous prime is 198503531. The next prime is 198503563. The reversal of 198503533 is 335305891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191628649 + 6874884 = 13843^2 + 2622^2 .

It is a cyclic number.

It is not a de Polignac number, because 198503533 - 2¹ = 198503531 is a prime.

It is a super-2 number, since 2×198503533² = 78807305226964178, which contains 22 as substring.

Together with 198503531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 198503492 and 198503501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198503531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99251766 + 99251767.

It is an arithmetic number, because the mean of its divisors is an integer number (99251767).

Almost surely, 2^198503533 is an apocalyptic number.

It is an amenable number.

198503533 is a deficient number, since it is larger than the sum of its proper divisors (1).

198503533 is an equidigital number, since it uses as much as digits as its factorization.

198503533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 198503533 is about 14089.1281845258. The cubic root of 198503533 is about 583.3413292691.

The spelling of 198503533 in words is "one hundred ninety-eight million, five hundred three thousand, five hundred thirty-three".