9819689022 has 512 divisors, whose sum is σ = 29727129600. Its totient is φ = 2351462400.

The previous prime is 9819688999. The next prime is 9819689071. The reversal of 9819689022 is 2209869189.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 9819689022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 77320323 + ... + 77320449.

It is an arithmetic number, because the mean of its divisors is an integer number (58060800).

Almost surely, 2^9819689022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9819689022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14863564800).

9819689022 is an abundant number, since it is smaller than the sum of its proper divisors (19907440578).

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

9819689022 is a wasteful number, since it uses less digits than its factorization.

9819689022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 9819689022 is about 99094.3440464692. The cubic root of 9819689022 is about 2141.4071321716.

The spelling of 9819689022 in words is "nine billion, eight hundred nineteen million, six hundred eighty-nine thousand, twenty-two".