9163642212 has 72 divisors (see below), whose sum is σ = 23984935520. Its totient is φ = 3025591920.

The previous prime is 9163642207. The next prime is 9163642219. The reversal of 9163642212 is 2122463619.

It is a happy number.

9163642212 is a `hidden beast` number, since 9 + 1 + 6 + 3 + 642 + 2 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9163642219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232787 + ... + 1240197.

Almost surely, 2^9163642212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9163642212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11992467760).

9163642212 is an abundant number, since it is smaller than the sum of its proper divisors (14821293308).

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

9163642212 is a wasteful number, since it uses less digits than its factorization.

9163642212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638 (or 7523 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 9163642212 is about 95726.9147732235. The cubic root of 9163642212 is about 2092.6151959294.

The spelling of 9163642212 in words is "nine billion, one hundred sixty-three million, six hundred forty-two thousand, two hundred twelve".