1982660776 has 8 divisors (see below), whose sum is σ = 3717488970. Its totient is φ = 991330384.

The previous prime is 1982660767. The next prime is 1982660783. The reversal of 1982660776 is 6770662891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1982564676 + 96100 = 44526^2 + 310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123916291 + ... + 123916306.

Almost surely, 2^1982660776 is an apocalyptic number.

It is an amenable number.

1982660776 is a deficient number, since it is larger than the sum of its proper divisors (1734828194).

1982660776 is a wasteful number, since it uses less digits than its factorization.

1982660776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247832603 (or 247832599 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 1982660776 is about 44527.0791316924. The cubic root of 1982660776 is about 1256.2694679920.

The spelling of 1982660776 in words is "one billion, nine hundred eighty-two million, six hundred sixty thousand, seven hundred seventy-six".