9808211872 has 12 divisors (see below), whose sum is σ = 19309917186. Its totient is φ = 4904105920.

The previous prime is 9808211869. The next prime is 9808211879. The reversal of 9808211872 is 2781128089.

It can be written as a sum of positive squares in only one way, i.e., 9255209616 + 553002256 = 96204^2 + 23516^2 .

It is not an unprimeable number, because it can be changed into a prime (9808211879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153253279 + ... + 153253342.

Almost surely, 2^9808211872 is an apocalyptic number.

It is an amenable number.

9808211872 is a deficient number, since it is larger than the sum of its proper divisors (9501705314).

9808211872 is a wasteful number, since it uses less digits than its factorization.

9808211872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306506631 (or 306506623 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 9808211872 is about 99036.4168980280. The cubic root of 9808211872 is about 2140.5725221602.

The spelling of 9808211872 in words is "nine billion, eight hundred eight million, two hundred eleven thousand, eight hundred seventy-two".