8731551378 has 32 divisors (see below), whose sum is σ = 19068632640. Its totient is φ = 2643428160.

The previous prime is 8731551263. The next prime is 8731551379.

8731551378 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8731551379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8676 + ... + 132432.

It is an arithmetic number, because the mean of its divisors is an integer number (595894770).

Almost surely, 2^8731551378 is an apocalyptic number.

8731551378 is an abundant number, since it is smaller than the sum of its proper divisors (10337081262).

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

8731551378 is a wasteful number, since it uses less digits than its factorization.

8731551378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124842.

The product of its digits is 705600, while the sum is 48.

The square root of 8731551378 is about 93442.7706031879. The cubic root of 8731551378 is about 2059.1934016567.

The spelling of 8731551378 in words is "eight billion, seven hundred thirty-one million, five hundred fifty-one thousand, three hundred seventy-eight".