9619997868 has 36 divisors (see below), whose sum is σ = 26187773248. Its totient is φ = 2959999200.

The previous prime is 9619997851. The next prime is 9619997869. The reversal of 9619997868 is 8687999169.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 9619997796 and 9619997805.

It is not an unprimeable number, because it can be changed into a prime (9619997869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10277308 + ... + 10278243.

Almost surely, 2^9619997868 is an apocalyptic number.

It is an amenable number.

9619997868 is an abundant number, since it is smaller than the sum of its proper divisors (16567775380).

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

9619997868 is a wasteful number, since it uses less digits than its factorization.

9619997868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20555574 (or 20555569 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 72.

The square root of 9619997868 is about 98081.5878134117. The cubic root of 9619997868 is about 2126.7918721741.

The spelling of 9619997868 in words is "nine billion, six hundred nineteen million, nine hundred ninety-seven thousand, eight hundred sixty-eight".