9812619913 has 8 divisors (see below), whose sum is σ = 10053416520. Its totient is φ = 9571893120.

The previous prime is 9812619911. The next prime is 9812619919. The reversal of 9812619913 is 3199162189.

It can be written as a sum of positive squares in 4 ways, for example, as 85137529 + 9727482384 = 9227^2 + 98628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9812619913 - 2¹ = 9812619911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9812619911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372543 + ... + 398011.

It is an arithmetic number, because the mean of its divisors is an integer number (1256677065).

Almost surely, 2^9812619913 is an apocalyptic number.

It is an amenable number.

9812619913 is a deficient number, since it is larger than the sum of its proper divisors (240796607).

9812619913 is a wasteful number, since it uses less digits than its factorization.

9812619913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34907.

The product of its digits is 209952, while the sum is 49.

The square root of 9812619913 is about 99058.6690451674. The cubic root of 9812619913 is about 2140.8931486709.

The spelling of 9812619913 in words is "nine billion, eight hundred twelve million, six hundred nineteen thousand, nine hundred thirteen".