198494892 has 36 divisors (see below), whose sum is σ = 502197696. Its totient is φ = 66106080.

The previous prime is 198494887. The next prime is 198494893. The reversal of 198494892 is 298494891.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (198494893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61093 + ... + 64259.

It is an arithmetic number, because the mean of its divisors is an integer number (13949936).

Almost surely, 2^198494892 is an apocalyptic number.

198494892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198494892 is an abundant number, since it is smaller than the sum of its proper divisors (303702804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198494892 is a wasteful number, since it uses less digits than its factorization.

198494892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918 (or 4913 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 198494892 is about 14088.8215263023. The cubic root of 198494892 is about 583.3328647252.

Subtracting 198494892 from its reverse (298494891), we obtain a palindrome (99999999).

The spelling of 198494892 in words is "one hundred ninety-eight million, four hundred ninety-four thousand, eight hundred ninety-two".