9121870968 has 128 divisors (see below), whose sum is σ = 27994560000. Its totient is φ = 2469035520.

The previous prime is 9121870951. The next prime is 9121870981. The reversal of 9121870968 is 8690781219.

It is a self number, because there is not a number n which added to its sum of digits gives 9121870968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127248 + ... + 185568.

It is an arithmetic number, because the mean of its divisors is an integer number (218707500).

Almost surely, 2^9121870968 is an apocalyptic number.

9121870968 is a gapful number since it is divisible by the number (98) 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 9121870968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13997280000).

9121870968 is an abundant number, since it is smaller than the sum of its proper divisors (18872689032).

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

9121870968 is a wasteful number, since it uses less digits than its factorization.

9121870968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58370 (or 58352 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 51.

The square root of 9121870968 is about 95508.4863663957. The cubic root of 9121870968 is about 2089.4307163434.

The spelling of 9121870968 in words is "nine billion, one hundred twenty-one million, eight hundred seventy thousand, nine hundred sixty-eight".