1982858860 has 48 divisors (see below), whose sum is σ = 4299240960. Its totient is φ = 767612160.

The previous prime is 1982858833. The next prime is 1982858861. The reversal of 1982858860 is 688582891.

It is not an unprimeable number, because it can be changed into a prime (1982858861) 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, 134326 + ... + 148354.

It is an arithmetic number, because the mean of its divisors is an integer number (89567520).

Almost surely, 2^1982858860 is an apocalyptic number.

1982858860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1982858860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149620480).

1982858860 is an abundant number, since it is smaller than the sum of its proper divisors (2316382100).

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

1982858860 is a wasteful number, since it uses less digits than its factorization.

1982858860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266 (or 14264 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 55.

The square root of 1982858860 is about 44529.3033855236. The cubic root of 1982858860 is about 1256.3113037912.

The spelling of 1982858860 in words is "one billion, nine hundred eighty-two million, eight hundred fifty-eight thousand, eight hundred sixty".