198057032823 has 32 divisors (see below), whose sum is σ = 293868015616. Its totient is φ = 117859494528.

The previous prime is 198057032779. The next prime is 198057032837. The reversal of 198057032823 is 328230750891.

It is a happy number.

It is not a de Polignac number, because 198057032823 - 2⁶ = 198057032759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198057032123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185815 + ... + 656232.

It is an arithmetic number, because the mean of its divisors is an integer number (9183375488).

Almost surely, 2^198057032823 is an apocalyptic number.

198057032823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

198057032823 is a deficient number, since it is larger than the sum of its proper divisors (95810982793).

198057032823 is a wasteful number, since it uses less digits than its factorization.

198057032823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842263.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 198057032823 in words is "one hundred ninety-eight billion, fifty-seven million, thirty-two thousand, eight hundred twenty-three".