198971602 has 4 divisors (see below), whose sum is σ = 298457406. Its totient is φ = 99485800.

The previous prime is 198971599. The next prime is 198971603. The reversal of 198971602 is 206179891.

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

It can be written as a sum of positive squares in only one way, i.e., 141348321 + 57623281 = 11889^2 + 7591^2 .

It is not an unprimeable number, because it can be changed into a prime (198971603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49742899 + ... + 49742902.

Almost surely, 2^198971602 is an apocalyptic number.

198971602 is a deficient number, since it is larger than the sum of its proper divisors (99485804).

198971602 is an equidigital number, since it uses as much as digits as its factorization.

198971602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99485803.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 198971602 is about 14105.7294033311. The cubic root of 198971602 is about 583.7994733597.

The spelling of 198971602 in words is "one hundred ninety-eight million, nine hundred seventy-one thousand, six hundred two".