1982696644 has 24 divisors (see below), whose sum is σ = 3548434680. Its totient is φ = 969099264.

The previous prime is 1982696641. The next prime is 1982696647. The reversal of 1982696644 is 4466962891.

It is an interprime number because it is at equal distance from previous prime (1982696641) and next prime (1982696647).

It can be written as a sum of positive squares in 4 ways, for example, as 391644100 + 1591052544 = 19790^2 + 39888^2 .

It is not an unprimeable number, because it can be changed into a prime (1982696641) 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, 2952 + ... + 63040.

It is an arithmetic number, because the mean of its divisors is an integer number (147851445).

Almost surely, 2^1982696644 is an apocalyptic number.

It is an amenable number.

1982696644 is a deficient number, since it is larger than the sum of its proper divisors (1565738036).

1982696644 is a wasteful number, since it uses less digits than its factorization.

1982696644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60279 (or 60277 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 55.

The square root of 1982696644 is about 44527.4818960156. The cubic root of 1982696644 is about 1256.2770436032.

The spelling of 1982696644 in words is "one billion, nine hundred eighty-two million, six hundred ninety-six thousand, six hundred forty-four".