9815948736 has 112 divisors (see below), whose sum is σ = 28359859968. Its totient is φ = 2971648000.

The previous prime is 9815948693. The next prime is 9815948743. The reversal of 9815948736 is 6378495189.

It is a self number, because there is not a number n which added to its sum of digits gives 9815948736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3379861 + ... + 3382763.

Almost surely, 2^9815948736 is an apocalyptic number.

9815948736 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9815948736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14179929984).

9815948736 is an abundant number, since it is smaller than the sum of its proper divisors (18543911232).

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

9815948736 is a wasteful number, since it uses less digits than its factorization.

9815948736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530 (or 4520 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The square root of 9815948736 is about 99075.4699004754. The cubic root of 9815948736 is about 2141.1352127574.

The spelling of 9815948736 in words is "nine billion, eight hundred fifteen million, nine hundred forty-eight thousand, seven hundred thirty-six".