1982111802 has 32 divisors (see below), whose sum is σ = 4512637440. Its totient is φ = 574524720.

The previous prime is 1982111801. The next prime is 1982111809. The reversal of 1982111802 is 2081112891.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1982111801) 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, 651352 + ... + 654387.

It is an arithmetic number, because the mean of its divisors is an integer number (141019920).

Almost surely, 2^1982111802 is an apocalyptic number.

1982111802 is an abundant number, since it is smaller than the sum of its proper divisors (2530525638).

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

1982111802 is a wasteful number, since it uses less digits than its factorization.

1982111802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305778.

The product of its (nonzero) digits is 2304, while the sum is 33.

The square root of 1982111802 is about 44520.9142089423. The cubic root of 1982111802 is about 1256.1535088483.

The spelling of 1982111802 in words is "one billion, nine hundred eighty-two million, one hundred eleven thousand, eight hundred two".