198880904863 has 2 divisors, whose sum is σ = 198880904864. Its totient is φ = 198880904862.

The previous prime is 198880904851. The next prime is 198880904917. The reversal of 198880904863 is 368409088891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198880904863 - 2¹³ = 198880896671 is a prime.

It is a super-2 number, since 2×198880904863² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198880904795 and 198880904804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198880904063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99440452431 + 99440452432.

It is an arithmetic number, because the mean of its divisors is an integer number (99440452432).

Almost surely, 2^198880904863 is an apocalyptic number.

198880904863 is a deficient number, since it is larger than the sum of its proper divisors (1).

198880904863 is an equidigital number, since it uses as much as digits as its factorization.

198880904863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23887872, while the sum is 64.

The spelling of 198880904863 in words is "one hundred ninety-eight billion, eight hundred eighty million, nine hundred four thousand, eight hundred sixty-three".