1648881836 has 24 divisors (see below), whose sum is σ = 3300114720. Its totient is φ = 706159872.

The previous prime is 1648881823. The next prime is 1648881841. The reversal of 1648881836 is 6381888461.

It is a super-2 number, since 2×1648881836² = 5437622618181461792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20420 + ... + 60948.

It is an arithmetic number, because the mean of its divisors is an integer number (137504780).

Almost surely, 2^1648881836 is an apocalyptic number.

It is an amenable number.

1648881836 is an abundant number, since it is smaller than the sum of its proper divisors (1651232884).

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

1648881836 is a wasteful number, since it uses less digits than its factorization.

1648881836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41993 (or 41991 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 53.

The square root of 1648881836 is about 40606.4260431770. The cubic root of 1648881836 is about 1181.3987616424.

The spelling of 1648881836 in words is "one billion, six hundred forty-eight million, eight hundred eighty-one thousand, eight hundred thirty-six".