1643602048 has 48 divisors (see below), whose sum is σ = 3599127630. Its totient is φ = 747084800.

The previous prime is 1643602033. The next prime is 1643602061. The reversal of 1643602048 is 8402063461.

It can be written as a sum of positive squares in only one way, i.e., 1124126784 + 519475264 = 33528^2 + 22792^2 .

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 5 ways as a sum of consecutive naturals, for example, 37573 + ... + 68548.

Almost surely, 2^1643602048 is an apocalyptic number.

It is an amenable number.

1643602048 is an abundant number, since it is smaller than the sum of its proper divisors (1955525582).

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

1643602048 is a wasteful number, since it uses less digits than its factorization.

1643602048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106157 (or 106134 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1643602048 is about 40541.3621872773. The cubic root of 1643602048 is about 1180.1364507533.

The spelling of 1643602048 in words is "one billion, six hundred forty-three million, six hundred two thousand, forty-eight".