538134309 has 6 divisors (see below), whose sum is σ = 777305126. Its totient is φ = 358756200.

The previous prime is 538134257. The next prime is 538134341. The reversal of 538134309 is 903431835.

It can be written as a sum of positive squares in only one way, i.e., 306425025 + 231709284 = 17505^2 + 15222^2 .

It is not a de Polignac number, because 538134309 - 2¹¹ = 538132261 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 (538134209) 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 5 ways as a sum of consecutive naturals, for example, 29896342 + ... + 29896359.

Almost surely, 2^538134309 is an apocalyptic number.

It is an amenable number.

538134309 is a deficient number, since it is larger than the sum of its proper divisors (239170817).

538134309 is a wasteful number, since it uses less digits than its factorization.

538134309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59792707 (or 59792704 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 538134309 is about 23197.7220648925. The cubic root of 538134309 is about 813.3863760795.

The spelling of 538134309 in words is "five hundred thirty-eight million, one hundred thirty-four thousand, three hundred nine".