9189458388 has 144 divisors (see below), whose sum is σ = 25889310720. Its totient is φ = 2724840000.

The previous prime is 9189458363. The next prime is 9189458393. The reversal of 9189458388 is 8838549819.

It is a happy number.

It is a super-2 number, since 2×9189458388² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5863581 + ... + 5865147.

It is an arithmetic number, because the mean of its divisors is an integer number (179786880).

Almost surely, 2^9189458388 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 9189458388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12944655360).

9189458388 is an abundant number, since it is smaller than the sum of its proper divisors (16699852332).

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

9189458388 is a wasteful number, since it uses less digits than its factorization.

9189458388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1893 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The square root of 9189458388 is about 95861.6627646318. The cubic root of 9189458388 is about 2094.5784862162.

The spelling of 9189458388 in words is "nine billion, one hundred eighty-nine million, four hundred fifty-eight thousand, three hundred eighty-eight".