198085523 has 2 divisors, whose sum is σ = 198085524. Its totient is φ = 198085522.

The previous prime is 198085471. The next prime is 198085529. The reversal of 198085523 is 325580891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198085523 - 2⁸ = 198085267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (198085529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99042761 + 99042762.

It is an arithmetic number, because the mean of its divisors is an integer number (99042762).

Almost surely, 2^198085523 is an apocalyptic number.

198085523 is a deficient number, since it is larger than the sum of its proper divisors (1).

198085523 is an equidigital number, since it uses as much as digits as its factorization.

198085523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 198085523 is about 14074.2858788643. The cubic root of 198085523 is about 582.9315735541.

The spelling of 198085523 in words is "one hundred ninety-eight million, eighty-five thousand, five hundred twenty-three".