5638555429 has 4 divisors (see below), whose sum is σ = 6072290476. Its totient is φ = 5204820384.

The previous prime is 5638555423. The next prime is 5638555441. The reversal of 5638555429 is 9245558365.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2840357025 + 2798198404 = 53295^2 + 52898^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638555429 - 2³ = 5638555421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638555421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 216867504 + ... + 216867529.

It is an arithmetic number, because the mean of its divisors is an integer number (1518072619).

Almost surely, 2^5638555429 is an apocalyptic number.

It is an amenable number.

5638555429 is a deficient number, since it is larger than the sum of its proper divisors (433735047).

5638555429 is a wasteful number, since it uses less digits than its factorization.

5638555429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433735046.

The product of its digits is 6480000, while the sum is 52.

The square root of 5638555429 is about 75090.3151478272. The cubic root of 5638555429 is about 1779.8741051599.

The spelling of 5638555429 in words is "five billion, six hundred thirty-eight million, five hundred fifty-five thousand, four hundred twenty-nine".