538087813 has 8 divisors (see below), whose sum is σ = 552214656. Its totient is φ = 524008800.

The previous prime is 538087811. The next prime is 538087817. The reversal of 538087813 is 318780835.

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 538087813 - 2¹ = 538087811 is a prime.

It is a super-4 number, since 4×538087813⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538087813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538087811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 34738.

It is an arithmetic number, because the mean of its divisors is an integer number (69026832).

Almost surely, 2^538087813 is an apocalyptic number.

It is an amenable number.

538087813 is a deficient number, since it is larger than the sum of its proper divisors (14126843).

538087813 is a wasteful number, since it uses less digits than its factorization.

538087813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23915.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 538087813 is about 23196.7198758790. The cubic root of 538087813 is about 813.3629492747.

The spelling of 538087813 in words is "five hundred thirty-eight million, eighty-seven thousand, eight hundred thirteen".