198103490 has 64 divisors (see below), whose sum is σ = 394813440. Its totient is φ = 71547840.

The previous prime is 198103489. The next prime is 198103501. The reversal of 198103490 is 94301891.

It is a self number, because there is not a number n which added to its sum of digits gives 198103490.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1559807 + ... + 1559933.

It is an arithmetic number, because the mean of its divisors is an integer number (6168960).

Almost surely, 2^198103490 is an apocalyptic number.

198103490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198103490 is a deficient number, since it is larger than the sum of its proper divisors (196709950).

198103490 is a wasteful number, since it uses less digits than its factorization.

198103490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 198103490 is about 14074.9241561012. The cubic root of 198103490 is about 582.9491976166.

The spelling of 198103490 in words is "one hundred ninety-eight million, one hundred three thousand, four hundred ninety".