5638239036 has 48 divisors (see below), whose sum is σ = 14621733280. Its totient is φ = 1878888960.

The previous prime is 5638239029. The next prime is 5638239059. The reversal of 5638239036 is 6309328365.

5638239036 is a `hidden beast` number, since 5 + 638 + 2 + 3 + 9 + 0 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5638238982 and 5638239000.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 686796 + ... + 694956.

Almost surely, 2^5638239036 is an apocalyptic number.

It is an amenable number.

5638239036 is an abundant number, since it is smaller than the sum of its proper divisors (8983494244).

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

5638239036 is a wasteful number, since it uses less digits than its factorization.

5638239036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571 (or 14563 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 5638239036 is about 75088.2083685581. The cubic root of 5638239036 is about 1779.8408135217.

The spelling of 5638239036 in words is "five billion, six hundred thirty-eight million, two hundred thirty-nine thousand, thirty-six".