982881864 has 80 divisors (see below), whose sum is σ = 2764404720. Its totient is φ = 326268000.

The previous prime is 982881863. The next prime is 982881869. The reversal of 982881864 is 468188289.

It is a super-2 number, since 2×982881864² = 1932113517160228992, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 982881864.

It is not an unprimeable number, because it can be changed into a prime (982881863) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 159627 + ... + 165669.

It is an arithmetic number, because the mean of its divisors is an integer number (34555059).

Almost surely, 2^982881864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 982881864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382202360).

982881864 is an abundant number, since it is smaller than the sum of its proper divisors (1781522856).

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

982881864 is a wasteful number, since it uses less digits than its factorization.

982881864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6312 (or 6299 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The square root of 982881864 is about 31350.9467799618. The cubic root of 982881864 is about 994.2610824966.

The spelling of 982881864 in words is "nine hundred eighty-two million, eight hundred eighty-one thousand, eight hundred sixty-four".