1982656449 has 12 divisors (see below), whose sum is σ = 2867722000. Its totient is φ = 1319977944.

The previous prime is 1982656391. The next prime is 1982656451. The reversal of 1982656449 is 9446562891.

1982656449 is a `hidden beast` number, since 19 + 8 + 26 + 564 + 49 = 666.

It is not a de Polignac number, because 1982656449 - 2⁷ = 1982656321 is a prime.

It is a super-2 number, since 2×1982656449² = 7861853189522579202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1982656395 and 1982656404.

It is not an unprimeable number, because it can be changed into a prime (1982656499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142399 + ... + 155700.

Almost surely, 2^1982656449 is an apocalyptic number.

It is an amenable number.

1982656449 is a deficient number, since it is larger than the sum of its proper divisors (885065551).

1982656449 is a wasteful number, since it uses less digits than its factorization.

1982656449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298844 (or 298841 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1982656449 is about 44527.0305432554. The cubic root of 1982656449 is about 1256.2685540885.

The spelling of 1982656449 in words is "one billion, nine hundred eighty-two million, six hundred fifty-six thousand, four hundred forty-nine".