9218239980 has 96 divisors (see below), whose sum is σ = 27009067008. Its totient is φ = 2346278400.

The previous prime is 9218239969. The next prime is 9218239991. The reversal of 9218239980 is 899328129.

It is an interprime number because it is at equal distance from previous prime (9218239969) and next prime (9218239991).

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, 101835 + ... + 169725.

It is an arithmetic number, because the mean of its divisors is an integer number (281344448).

Almost surely, 2^9218239980 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 9218239980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13504533504).

9218239980 is an abundant number, since it is smaller than the sum of its proper divisors (17790827028).

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

9218239980 is a wasteful number, since it uses less digits than its factorization.

9218239980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68007 (or 68005 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 9218239980 is about 96011.6658536868. The cubic root of 9218239980 is about 2096.7629629587.

The spelling of 9218239980 in words is "nine billion, two hundred eighteen million, two hundred thirty-nine thousand, nine hundred eighty".