198530071 has 2 divisors, whose sum is σ = 198530072. Its totient is φ = 198530070.

The previous prime is 198530041. The next prime is 198530117. The reversal of 198530071 is 170035891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198530071 - 2¹³ = 198521879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198530041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99265035 + 99265036.

It is an arithmetic number, because the mean of its divisors is an integer number (99265036).

Almost surely, 2^198530071 is an apocalyptic number.

198530071 is a deficient number, since it is larger than the sum of its proper divisors (1).

198530071 is an equidigital number, since it uses as much as digits as its factorization.

198530071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 198530071 is about 14090.0699430485. The cubic root of 198530071 is about 583.3673238062.

The spelling of 198530071 in words is "one hundred ninety-eight million, five hundred thirty thousand, seventy-one".