8193331440 has 200 divisors, whose sum is σ = 32522070240. Its totient is φ = 1872751104.

The previous prime is 8193331397. The next prime is 8193331451. The reversal of 8193331440 is 441333918.

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

It is a junction number, because it is equal to n+sod(n) for n = 8193331395 and 8193331404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44955 + ... + 135674.

Almost surely, 2^8193331440 is an apocalyptic number.

8193331440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8193331440 is an abundant number, since it is smaller than the sum of its proper divisors (24328738800).

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

8193331440 is a wasteful number, since it uses less digits than its factorization.

8193331440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180661 (or 180646 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8193331440 is about 90517.0229293916. The cubic root of 8193331440 is about 2015.9828867595.

The spelling of 8193331440 in words is "eight billion, one hundred ninety-three million, three hundred thirty-one thousand, four hundred forty".