538681429 has 16 divisors (see below), whose sum is σ = 646329600. Its totient is φ = 442416960.

The previous prime is 538681427. The next prime is 538681439. The reversal of 538681429 is 924186835.

It is a cyclic number.

It is not a de Polignac number, because 538681429 - 2¹ = 538681427 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 (538681421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33354 + ... + 46795.

It is an arithmetic number, because the mean of its divisors is an integer number (40395600).

Almost surely, 2^538681429 is an apocalyptic number.

It is an amenable number.

538681429 is a deficient number, since it is larger than the sum of its proper divisors (107648171).

538681429 is a wasteful number, since it uses less digits than its factorization.

538681429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80220.

The product of its digits is 414720, while the sum is 46.

The square root of 538681429 is about 23209.5116062359. The cubic root of 538681429 is about 813.6619387750.

The spelling of 538681429 in words is "five hundred thirty-eight million, six hundred eighty-one thousand, four hundred twenty-nine".