5637821738 has 16 divisors (see below), whose sum is σ = 8639740800. Its totient is φ = 2757950976.

The previous prime is 5637821737. The next prime is 5637821743. The reversal of 5637821738 is 8371287365.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5637821737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303338 + ... + 321386.

It is an arithmetic number, because the mean of its divisors is an integer number (539983800).

Almost surely, 2^5637821738 is an apocalyptic number.

5637821738 is a deficient number, since it is larger than the sum of its proper divisors (3001919062).

5637821738 is a wasteful number, since it uses less digits than its factorization.

5637821738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21421.

The product of its digits is 1693440, while the sum is 50.

The square root of 5637821738 is about 75085.4295985579. The cubic root of 5637821738 is about 1779.7969025103.

The spelling of 5637821738 in words is "five billion, six hundred thirty-seven million, eight hundred twenty-one thousand, seven hundred thirty-eight".