981748866 has 32 divisors (see below), whose sum is σ = 2250460800. Its totient is φ = 279691776.

The previous prime is 981748819. The next prime is 981748871. The reversal of 981748866 is 668847189.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18831 + ... + 48146.

It is an arithmetic number, because the mean of its divisors is an integer number (70326900).

Almost surely, 2^981748866 is an apocalyptic number.

981748866 is an abundant number, since it is smaller than the sum of its proper divisors (1268711934).

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

981748866 is a wasteful number, since it uses less digits than its factorization.

981748866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67338.

The product of its digits is 4644864, while the sum is 57.

The square root of 981748866 is about 31332.8719717807. The cubic root of 981748866 is about 993.8788972157.

The spelling of 981748866 in words is "nine hundred eighty-one million, seven hundred forty-eight thousand, eight hundred sixty-six".