1648782980 has 24 divisors (see below), whose sum is σ = 3728786712. Its totient is φ = 608781312.

The previous prime is 1648782977. The next prime is 1648782997. The reversal of 1648782980 is 892878461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 310393924 + 1338389056 = 17618^2 + 36584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170477 + ... + 3170996.

It is an arithmetic number, because the mean of its divisors is an integer number (155366113).

Almost surely, 2^1648782980 is an apocalyptic number.

1648782980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648782980 is an abundant number, since it is smaller than the sum of its proper divisors (2080003732).

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

1648782980 is a wasteful number, since it uses less digits than its factorization.

1648782980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341495 (or 6341493 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 1648782980 is about 40605.2087791702. The cubic root of 1648782980 is about 1181.3751515636.

The spelling of 1648782980 in words is "one billion, six hundred forty-eight million, seven hundred eighty-two thousand, nine hundred eighty".