9873813690 has 192 divisors, whose sum is σ = 29363233536. Its totient is φ = 2280462336.

The previous prime is 9873813661. The next prime is 9873813737. The reversal of 9873813690 is 963183789.

It is a super-2 number, since 2×9873813690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9288099 + ... + 9289161.

It is an arithmetic number, because the mean of its divisors is an integer number (152933508).

Almost surely, 2^9873813690 is an apocalyptic number.

9873813690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9873813690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14681616768).

9873813690 is an abundant number, since it is smaller than the sum of its proper divisors (19489419846).

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

9873813690 is a wasteful number, since it uses less digits than its factorization.

9873813690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 9873813690 is about 99367.0654190814. The cubic root of 9873813690 is about 2145.3342983949.

The spelling of 9873813690 in words is "nine billion, eight hundred seventy-three million, eight hundred thirteen thousand, six hundred ninety".