9818689479 has 4 divisors (see below), whose sum is σ = 13091585976. Its totient is φ = 6545792984.

The previous prime is 9818689459. The next prime is 9818689481. The reversal of 9818689479 is 9749868189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9749868189 = 3 ⋅3249956063.

It is a cyclic number.

It is not a de Polignac number, because 9818689479 - 2¹³ = 9818681287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9818689409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636448244 + ... + 1636448249.

It is an arithmetic number, because the mean of its divisors is an integer number (3272896494).

Almost surely, 2^9818689479 is an apocalyptic number.

9818689479 is a deficient number, since it is larger than the sum of its proper divisors (3272896497).

9818689479 is a wasteful number, since it uses less digits than its factorization.

9818689479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272896496.

The product of its digits is 62705664, while the sum is 69.

The square root of 9818689479 is about 99089.3005273526. The cubic root of 9818689479 is about 2141.3344719909.

The spelling of 9818689479 in words is "nine billion, eight hundred eighteen million, six hundred eighty-nine thousand, four hundred seventy-nine".