5531938129 has 3 divisors (see below), whose sum is σ = 5532012507. Its totient is φ = 5531863752.

The previous prime is 5531938121. The next prime is 5531938151. The reversal of 5531938129 is 9218391355.

The square root of 5531938129 is 74377.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 78411025 + 5453527104 = 8855^2 + 73848^2 .

It is not a de Polignac number, because 5531938129 - 2³ = 5531938121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5531938121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 37189 + ... + 111565.

It is an arithmetic number, because the mean of its divisors is an integer number (1844004169).

Almost surely, 2^5531938129 is an apocalyptic number.

5531938129 is the 74377-th square number.

5531938129 is the 37189-th centered octagonal number.

It is an amenable number.

5531938129 is a deficient number, since it is larger than the sum of its proper divisors (74378).

5531938129 is an frugal number, since it uses more digits than its factorization.

5531938129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148754 (or 74377 counting only the distinct ones).

The product of its digits is 291600, while the sum is 46.

The cubic root of 5531938129 is about 1768.5843244138.

The spelling of 5531938129 in words is "five billion, five hundred thirty-one million, nine hundred thirty-eight thousand, one hundred twenty-nine".