9806513898 has 32 divisors (see below), whose sum is σ = 20321072640. Its totient is φ = 3151615680.

The previous prime is 9806513881. The next prime is 9806513923. The reversal of 9806513898 is 8983156089.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47965 + ... + 148032.

It is an arithmetic number, because the mean of its divisors is an integer number (635033520).

Almost surely, 2^9806513898 is an apocalyptic number.

9806513898 is an abundant number, since it is smaller than the sum of its proper divisors (10514558742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9806513898 is a wasteful number, since it uses less digits than its factorization.

9806513898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196302.

The product of its (nonzero) digits is 3732480, while the sum is 57.

The square root of 9806513898 is about 99027.8440540841. The cubic root of 9806513898 is about 2140.4489914462.

The spelling of 9806513898 in words is "nine billion, eight hundred six million, five hundred thirteen thousand, eight hundred ninety-eight".