19820204198 has 16 divisors (see below), whose sum is σ = 31325832000. Its totient is φ = 9379285992.

The previous prime is 19820204197. The next prime is 19820204227. The reversal of 19820204198 is 89140202891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19820204191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217208 + ... + 294651.

It is an arithmetic number, because the mean of its divisors is an integer number (1957864500).

Almost surely, 2^19820204198 is an apocalyptic number.

19820204198 is a deficient number, since it is larger than the sum of its proper divisors (11505627802).

19820204198 is a wasteful number, since it uses less digits than its factorization.

19820204198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512899.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 19820204198 in words is "nineteen billion, eight hundred twenty million, two hundred four thousand, one hundred ninety-eight".