9680198545 has 4 divisors (see below), whose sum is σ = 11616238260. Its totient is φ = 7744158832.

The previous prime is 9680198509. The next prime is 9680198557. The reversal of 9680198545 is 5458910869.

It is a Cunningham number, because it is equal to 98388²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5458910869 = 31 ⋅176093899.

It can be written as a sum of positive squares in 2 ways, for example, as 3484777024 + 6195421521 = 59032^2 + 78711^2 .

It is a cyclic number.

It is not a de Polignac number, because 9680198545 - 2⁷ = 9680198417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968019850 + ... + 968019859.

It is an arithmetic number, because the mean of its divisors is an integer number (2904059565).

Almost surely, 2^9680198545 is an apocalyptic number.

It is an amenable number.

9680198545 is a deficient number, since it is larger than the sum of its proper divisors (1936039715).

9680198545 is a wasteful number, since it uses less digits than its factorization.

9680198545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936039714.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The square root of 9680198545 is about 98388.0000050819. Note that the first 5 decimals coincide. The cubic root of 9680198545 is about 2131.2190443700.

The spelling of 9680198545 in words is "nine billion, six hundred eighty million, one hundred ninety-eight thousand, five hundred forty-five".