198752823 has 12 divisors (see below), whose sum is σ = 291794568. Its totient is φ = 130329360.

The previous prime is 198752819. The next prime is 198752833. The reversal of 198752823 is 328257891.

It is a happy number.

It is not a de Polignac number, because 198752823 - 2² = 198752819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198752803) 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 in 11 ways as a sum of consecutive naturals, for example, 180465 + ... + 181562.

It is an arithmetic number, because the mean of its divisors is an integer number (24316214).

Almost surely, 2^198752823 is an apocalyptic number.

198752823 is a deficient number, since it is larger than the sum of its proper divisors (93041745).

198752823 is a wasteful number, since it uses less digits than its factorization.

198752823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362094 (or 362091 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 198752823 is about 14097.9723010084. The cubic root of 198752823 is about 583.5854228706.

The spelling of 198752823 in words is "one hundred ninety-eight million, seven hundred fifty-two thousand, eight hundred twenty-three".