7881430866 has 32 divisors (see below), whose sum is σ = 16048281600. Its totient is φ = 2579675280.

The previous prime is 7881430859. The next prime is 7881430871. The reversal of 7881430866 is 6680341887.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 310275 + ... + 334713.

It is an arithmetic number, because the mean of its divisors is an integer number (501508800).

Almost surely, 2^7881430866 is an apocalyptic number.

7881430866 is an abundant number, since it is smaller than the sum of its proper divisors (8166850734).

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

7881430866 is a wasteful number, since it uses less digits than its factorization.

7881430866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25414.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 7881430866 is about 88777.4231772921. The cubic root of 7881430866 is about 1990.0700181588.

The spelling of 7881430866 in words is "seven billion, eight hundred eighty-one million, four hundred thirty thousand, eight hundred sixty-six".