1982855364 has 144 divisors (see below), whose sum is σ = 5543661312. Its totient is φ = 549739008.

The previous prime is 1982855327. The next prime is 1982855377. The reversal of 1982855364 is 4635582891.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4338624 + ... + 4339080.

It is an arithmetic number, because the mean of its divisors is an integer number (38497648).

Almost surely, 2^1982855364 is an apocalyptic number.

1982855364 is a gapful number since it is divisible by the number (14) 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 1982855364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2771830656).

1982855364 is an abundant number, since it is smaller than the sum of its proper divisors (3560805948).

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

1982855364 is a wasteful number, since it uses less digits than its factorization.

1982855364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 673 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 51.

The square root of 1982855364 is about 44529.2641304570. The cubic root of 1982855364 is about 1256.3105654521.

The spelling of 1982855364 in words is "one billion, nine hundred eighty-two million, eight hundred fifty-five thousand, three hundred sixty-four".