8188278881 has 8 divisors (see below), whose sum is σ = 8218624128. Its totient is φ = 8157960000.

The previous prime is 8188278877. The next prime is 8188278907. The reversal of 8188278881 is 1888728818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8188278881 - 2² = 8188278877 is a prime.

It is a super-2 number, since 2×8188278881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8188278881.

It is not an unprimeable number, because it can be changed into a prime (8188278181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788201 + ... + 798521.

It is an arithmetic number, because the mean of its divisors is an integer number (1027328016).

Almost surely, 2^8188278881 is an apocalyptic number.

It is an amenable number.

8188278881 is a deficient number, since it is larger than the sum of its proper divisors (30345247).

8188278881 is a wasteful number, since it uses less digits than its factorization.

8188278881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183.

The product of its digits is 3670016, while the sum is 59.

The square root of 8188278881 is about 90489.1091844759. The cubic root of 8188278881 is about 2015.5684046881.

The spelling of 8188278881 in words is "eight billion, one hundred eighty-eight million, two hundred seventy-eight thousand, eight hundred eighty-one".