198902 has 8 divisors (see below), whose sum is σ = 325512. Its totient is φ = 90400.

The previous prime is 198901. The next prime is 198929. The reversal of 198902 is 209891.

198902 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4499 + ... + 4542.

It is an arithmetic number, because the mean of its divisors is an integer number (40689).

2¹⁹⁸⁹⁰² is an apocalyptic number.

198902 is a deficient number, since it is larger than the sum of its proper divisors (126610).

198902 is a wasteful number, since it uses less digits than its factorization.

198902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 198902 is about 445.9843046566. The cubic root of 198902 is about 58.3731392707.

The spelling of 198902 in words is "one hundred ninety-eight thousand, nine hundred two".