198122523 has 4 divisors (see below), whose sum is σ = 264163368. Its totient is φ = 132081680.

The previous prime is 198122521. The next prime is 198122549. The reversal of 198122523 is 325221891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198122523 - 2¹ = 198122521 is a prime.

It is a super-3 number, since 3×198122523³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198122521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33020418 + ... + 33020423.

It is an arithmetic number, because the mean of its divisors is an integer number (66040842).

Almost surely, 2^198122523 is an apocalyptic number.

198122523 is a deficient number, since it is larger than the sum of its proper divisors (66040845).

198122523 is an equidigital number, since it uses as much as digits as its factorization.

198122523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66040844.

The product of its digits is 8640, while the sum is 33.

The square root of 198122523 is about 14075.6002713916. The cubic root of 198122523 is about 582.9678661701.

The spelling of 198122523 in words is "one hundred ninety-eight million, one hundred twenty-two thousand, five hundred twenty-three".