538130905 has 8 divisors (see below), whose sum is σ = 695430792. Its totient is φ = 397388928.

The previous prime is 538130897. The next prime is 538130909. The reversal of 538130905 is 509031835.

It can be written as a sum of positive squares in 4 ways, for example, as 447561 + 537683344 = 669^2 + 23188^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 538130905 - 2³ = 538130897 is a prime.

It is a super-2 number, since 2×538130905² = 579169741832238050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538130909) 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 7 ways as a sum of consecutive naturals, for example, 4139404 + ... + 4139533.

It is an arithmetic number, because the mean of its divisors is an integer number (86928849).

Almost surely, 2^538130905 is an apocalyptic number.

It is an amenable number.

538130905 is a deficient number, since it is larger than the sum of its proper divisors (157299887).

538130905 is a wasteful number, since it uses less digits than its factorization.

538130905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278955.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 538130905 is about 23197.6486955036. The cubic root of 538130905 is about 813.3846610348.

The spelling of 538130905 in words is "five hundred thirty-eight million, one hundred thirty thousand, nine hundred five".