198880904807 has 4 divisors (see below), whose sum is σ = 214179435960. Its totient is φ = 183582373656.

The previous prime is 198880904797. The next prime is 198880904809. The reversal of 198880904807 is 708409088891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198880904807 - 2⁶ = 198880904743 is a prime.

It is a super-2 number, since 2×198880904807² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198880904807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198880904809) 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, 7649265557 + ... + 7649265582.

It is an arithmetic number, because the mean of its divisors is an integer number (53544858990).

Almost surely, 2^198880904807 is an apocalyptic number.

198880904807 is a deficient number, since it is larger than the sum of its proper divisors (15298531153).

198880904807 is a wasteful number, since it uses less digits than its factorization.

198880904807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15298531152.

The product of its (nonzero) digits is 9289728, while the sum is 62.

The spelling of 198880904807 in words is "one hundred ninety-eight billion, eight hundred eighty million, nine hundred four thousand, eight hundred seven".