8188093440 has 352 divisors, whose sum is σ = 29606497920. Its totient is φ = 2145484800.

The previous prime is 8188093439. The next prime is 8188093447. The reversal of 8188093440 is 443908818.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (8188093447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8432155 + ... + 8433125.

Almost surely, 2^8188093440 is an apocalyptic number.

8188093440 is a gapful number since it is divisible by the number (80) 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 8188093440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14803248960).

8188093440 is an abundant number, since it is smaller than the sum of its proper divisors (21418404480).

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

8188093440 is a wasteful number, since it uses less digits than its factorization.

8188093440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8188093440 is about 90488.0845194548. The cubic root of 8188093440 is about 2015.5531889613.

The spelling of 8188093440 in words is "eight billion, one hundred eighty-eight million, ninety-three thousand, four hundred forty".