538995213 has 18 divisors (see below), whose sum is σ = 793985166. Its totient is φ = 352218672.

The previous prime is 538995209. The next prime is 538995221. The reversal of 538995213 is 312599835.

538995213 is a `hidden beast` number, since 5 + 38 + 99 + 521 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 498316329 + 40678884 = 22323^2 + 6378^2 .

It is not a de Polignac number, because 538995213 - 2² = 538995209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538995203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 506520 + ... + 507582.

It is an arithmetic number, because the mean of its divisors is an integer number (44110287).

Almost surely, 2^538995213 is an apocalyptic number.

538995213 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

538995213 is a deficient number, since it is larger than the sum of its proper divisors (254989953).

538995213 is an equidigital number, since it uses as much as digits as its factorization.

538995213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 1119 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 538995213 is about 23216.2704369156. The cubic root of 538995213 is about 813.8198951764.

The spelling of 538995213 in words is "five hundred thirty-eight million, nine hundred ninety-five thousand, two hundred thirteen".