9819883981620 has 72 divisors (see below), whose sum is σ = 30747851796480. Its totient is φ = 2534163606720.

The previous prime is 9819883981591. The next prime is 9819883981643. The reversal of 9819883981620 is 261893889189.

9819883981620 is a `hidden beast` number, since 98 + 1 + 98 + 8 + 398 + 1 + 62 + 0 = 666.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 879912340 + ... + 879923499.

Almost surely, 2^{9819883981620} is an apocalyptic number.

9819883981620 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9819883981620 is an abundant number, since it is smaller than the sum of its proper divisors (20927967814860).

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

9819883981620 is a wasteful number, since it uses less digits than its factorization.

9819883981620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759835885 (or 1759835880 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 72.

The spelling of 9819883981620 in words is "nine trillion, eight hundred nineteen billion, eight hundred eighty-three million, nine hundred eighty-one thousand, six hundred twenty".