9141220872 has 384 divisors, whose sum is σ = 31420224000. Its totient is φ = 2448351360.

The previous prime is 9141220843. The next prime is 9141220889. The reversal of 9141220872 is 2780221419.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 26343403 + ... + 26343749.

It is an arithmetic number, because the mean of its divisors is an integer number (81823500).

Almost surely, 2^9141220872 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 9141220872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15710112000).

9141220872 is an abundant number, since it is smaller than the sum of its proper divisors (22279003128).

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

9141220872 is a wasteful number, since it uses less digits than its factorization.

9141220872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 9141220872 is about 95609.7320987775. The cubic root of 9141220872 is about 2090.9070848713.

The spelling of 9141220872 in words is "nine billion, one hundred forty-one million, two hundred twenty thousand, eight hundred seventy-two".