8981635000 has 80 divisors (see below), whose sum is σ = 22662901800. Its totient is φ = 3316272000.

The previous prime is 8981634919. The next prime is 8981635001. The reversal of 8981635000 is 5361898.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8981635001) 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 19 ways as a sum of consecutive naturals, for example, 4090 + ... + 134089.

Almost surely, 2^8981635000 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 8981635000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11331450900).

8981635000 is an abundant number, since it is smaller than the sum of its proper divisors (13681266800).

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

8981635000 is a wasteful number, since it uses less digits than its factorization.

8981635000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138218 (or 138199 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 8981635000 is about 94771.4883285052. The cubic root of 8981635000 is about 2078.6680174044.

Adding to 8981635000 its reverse (5361898), we get a palindrome (8986996898).

The spelling of 8981635000 in words is "eight billion, nine hundred eighty-one million, six hundred thirty-five thousand".