9469809918 has 72 divisors (see below), whose sum is σ = 21495742632. Its totient is φ = 3012756384.

The previous prime is 9469809917. The next prime is 9469809961. The reversal of 9469809918 is 8199089649.

9469809918 is a `hidden beast` number, since 9 + 469 + 80 + 9 + 91 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9469809917) 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 35 ways as a sum of consecutive naturals, for example, 6217105 + ... + 6218627.

It is an arithmetic number, because the mean of its divisors is an integer number (298551981).

Almost surely, 2^9469809918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9469809918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10747871316).

9469809918 is an abundant number, since it is smaller than the sum of its proper divisors (12025932714).

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

9469809918 is a wasteful number, since it uses less digits than its factorization.

9469809918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 2204 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 9469809918 is about 97312.9483573486. The cubic root of 9469809918 is about 2115.6659050345.

The spelling of 9469809918 in words is "nine billion, four hundred sixty-nine million, eight hundred nine thousand, nine hundred eighteen".