9639826234019 has 4 divisors (see below), whose sum is σ = 9639834665496. Its totient is φ = 9639817802544.

The previous prime is 9639826234013. The next prime is 9639826234021. The reversal of 9639826234019 is 9104326289369.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9639826234019 - 2¹² = 9639826229923 is a prime.

It is a super-2 number, since 2×9639826234019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9639826234013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169794 + ... + 4897719.

It is an arithmetic number, because the mean of its divisors is an integer number (2409958666374).

Almost surely, 2^{9639826234019} is an apocalyptic number.

9639826234019 is a deficient number, since it is larger than the sum of its proper divisors (8431477).

9639826234019 is a wasteful number, since it uses less digits than its factorization.

9639826234019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431476.

The product of its (nonzero) digits is 30233088, while the sum is 62.

The spelling of 9639826234019 in words is "nine trillion, six hundred thirty-nine billion, eight hundred twenty-six million, two hundred thirty-four thousand, nineteen".