1982066963881 has 27 divisors (see below), whose sum is σ = 2044290975069. Its totient is φ = 1921727535000.

The previous prime is 1982066963873. The next prime is 1982066963909. The reversal of 1982066963881 is 1883696602891.

The square root of 1982066963881 is 1407859.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1982066963881 - 2³ = 1982066963873 is a prime.

It is a super-2 number, since 2×1982066963881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982066903881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7896681006 + ... + 7896681256.

Almost surely, 2^{1982066963881} is an apocalyptic number.

1982066963881 is the 1407859-th square number.

1982066963881 is the 703930-th centered octagonal number.

It is an amenable number.

1982066963881 is a deficient number, since it is larger than the sum of its proper divisors (62224011188).

1982066963881 is an frugal number, since it uses more digits than its factorization.

1982066963881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 67.

The spelling of 1982066963881 in words is "one trillion, nine hundred eighty-two billion, sixty-six million, nine hundred sixty-three thousand, eight hundred eighty-one".