1980286782 has 16 divisors (see below), whose sum is σ = 3986804352. Its totient is φ = 655723800.

The previous prime is 1980286747. The next prime is 1980286787. The reversal of 1980286782 is 2876820891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980286787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091968 + ... + 1093779.

It is an arithmetic number, because the mean of its divisors is an integer number (249175272).

Almost surely, 2^1980286782 is an apocalyptic number.

1980286782 is an abundant number, since it is smaller than the sum of its proper divisors (2006517570).

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

1980286782 is a wasteful number, since it uses less digits than its factorization.

1980286782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185903.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 1980286782 is about 44500.4132789798. The cubic root of 1980286782 is about 1255.7678580088.

The spelling of 1980286782 in words is "one billion, nine hundred eighty million, two hundred eighty-six thousand, seven hundred eighty-two".