8731881378 has 64 divisors (see below), whose sum is σ = 21740365440. Its totient is φ = 2574504000.

The previous prime is 8731881359. The next prime is 8731881409.

8731881378 is nontrivially palindromic in base 10.

8731881378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176673 + ... + 220628.

It is an arithmetic number, because the mean of its divisors is an integer number (339693210).

Almost surely, 2^8731881378 is an apocalyptic number.

8731881378 is an abundant number, since it is smaller than the sum of its proper divisors (13008484062).

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

8731881378 is a wasteful number, since it uses less digits than its factorization.

8731881378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397360 (or 397354 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The square root of 8731881378 is about 93444.5363731877. The cubic root of 8731881378 is about 2059.2193430285.

The spelling of 8731881378 in words is "eight billion, seven hundred thirty-one million, eight hundred eighty-one thousand, three hundred seventy-eight".