198892450 has 12 divisors (see below), whose sum is σ = 369940050. Its totient is φ = 79556960.

The previous prime is 198892429. The next prime is 198892451. The reversal of 198892450 is 54298891.

It can be written as a sum of positive squares in 3 ways, for example, as 117874449 + 81018001 = 10857^2 + 9001^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198892450.

It is not an unprimeable number, because it can be changed into a prime (198892451) 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 5 ways as a sum of consecutive naturals, for example, 1988875 + ... + 1988974.

Almost surely, 2^198892450 is an apocalyptic number.

198892450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198892450 is a deficient number, since it is larger than the sum of its proper divisors (171047600).

198892450 is a wasteful number, since it uses less digits than its factorization.

198892450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977861 (or 3977856 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 198892450 is about 14102.9234557945. The cubic root of 198892450 is about 583.7220502096.

The spelling of 198892450 in words is "one hundred ninety-eight million, eight hundred ninety-two thousand, four hundred fifty".