538089813 has 6 divisors (see below), whose sum is σ = 777240854. Its totient is φ = 358726536.

The previous prime is 538089767. The next prime is 538089829. The reversal of 538089813 is 318980835.

It can be written as a sum of positive squares in only one way, i.e., 535552164 + 2537649 = 23142^2 + 1593^2 .

It is not a de Polignac number, because 538089813 - 2¹⁸ = 537827669 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 (538089883) 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, 29893870 + ... + 29893887.

Almost surely, 2^538089813 is an apocalyptic number.

It is an amenable number.

538089813 is a deficient number, since it is larger than the sum of its proper divisors (239151041).

538089813 is a wasteful number, since it uses less digits than its factorization.

538089813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59787763 (or 59787760 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 538089813 is about 23196.7629853822. The cubic root of 538089813 is about 813.3639569936.

The spelling of 538089813 in words is "five hundred thirty-eight million, eighty-nine thousand, eight hundred thirteen".