538641513 has 12 divisors (see below), whose sum is σ = 787887360. Its totient is φ = 354548376.

The previous prime is 538641463. The next prime is 538641517. The reversal of 538641513 is 315146835.

538641513 is a `hidden beast` number, since 5 + 3 + 8 + 641 + 5 + 1 + 3 = 666.

It is not a de Polignac number, because 538641513 - 2⁹ = 538641001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538641517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378081 + ... + 379502.

It is an arithmetic number, because the mean of its divisors is an integer number (65657280).

Almost surely, 2^538641513 is an apocalyptic number.

It is an amenable number.

538641513 is a deficient number, since it is larger than the sum of its proper divisors (249245847).

538641513 is a wasteful number, since it uses less digits than its factorization.

538641513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757668 (or 757665 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 538641513 is about 23208.6516842319. The cubic root of 538641513 is about 813.6418409767.

The spelling of 538641513 in words is "five hundred thirty-eight million, six hundred forty-one thousand, five hundred thirteen".