198102004 has 6 divisors (see below), whose sum is σ = 346678514. Its totient is φ = 99051000.

The previous prime is 198101977. The next prime is 198102011. The reversal of 198102004 is 400201891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 4613904 = 13910^2 + 2148^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198102004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24762747 + ... + 24762754.

Almost surely, 2^198102004 is an apocalyptic number.

It is an amenable number.

198102004 is a deficient number, since it is larger than the sum of its proper divisors (148576510).

198102004 is a wasteful number, since it uses less digits than its factorization.

198102004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49525505 (or 49525503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 198102004 is about 14074.8713670854. The cubic root of 198102004 is about 582.9477400205.

Adding to 198102004 its reverse (400201891), we get a palindrome (598303895).

The spelling of 198102004 in words is "one hundred ninety-eight million, one hundred two thousand, four".