5638450408 has 8 divisors (see below), whose sum is σ = 10572094530. Its totient is φ = 2819225200.

The previous prime is 5638450361. The next prime is 5638450409. The reversal of 5638450408 is 8040548365.

It can be written as a sum of positive squares in only one way, i.e., 5600726244 + 37724164 = 74838^2 + 6142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (5638450409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352403143 + ... + 352403158.

Almost surely, 2^5638450408 is an apocalyptic number.

It is an amenable number.

5638450408 is a deficient number, since it is larger than the sum of its proper divisors (4933644122).

5638450408 is a wasteful number, since it uses less digits than its factorization.

5638450408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704806307 (or 704806303 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 5638450408 is about 75089.6158466668. The cubic root of 5638450408 is about 1779.8630547338.

The spelling of 5638450408 in words is "five billion, six hundred thirty-eight million, four hundred fifty thousand, four hundred eight".