1681980582 has 16 divisors (see below), whose sum is σ = 3398642352. Its totient is φ = 554880000.

The previous prime is 1681980581. The next prime is 1681980583. The reversal of 1681980582 is 2850891861.

It is an interprime number because it is at equal distance from previous prime (1681980581) and next prime (1681980583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681980581) 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, 1444419 + ... + 1445582.

It is an arithmetic number, because the mean of its divisors is an integer number (212415147).

Almost surely, 2^1681980582 is an apocalyptic number.

1681980582 is an abundant number, since it is smaller than the sum of its proper divisors (1716661770).

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

1681980582 is a wasteful number, since it uses less digits than its factorization.

1681980582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890103.

The product of its (nonzero) digits is 276480, while the sum is 48.

The square root of 1681980582 is about 41011.9565736628. The cubic root of 1681980582 is about 1189.2513668072.

The spelling of 1681980582 in words is "one billion, six hundred eighty-one million, nine hundred eighty thousand, five hundred eighty-two".