1808634101648 has 20 divisors (see below), whose sum is σ = 3822794806128. Its totient is φ = 822106409760.

The previous prime is 1808634101623. The next prime is 1808634101683. The reversal of 1808634101648 is 8461014368081.

It is a junction number, because it is equal to n+sod(n) for n = 1808634101596 and 1808634101605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5138164886 + ... + 5138165237.

Almost surely, 2^{1808634101648} is an apocalyptic number.

It is an amenable number.

1808634101648 is an abundant number, since it is smaller than the sum of its proper divisors (2014160704480).

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

1808634101648 is a wasteful number, since it uses less digits than its factorization.

1808634101648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276330142 (or 10276330136 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 1808634101648 in words is "one trillion, eight hundred eight billion, six hundred thirty-four million, one hundred one thousand, six hundred forty-eight".