538218213 has 8 divisors (see below), whose sum is σ = 772826208. Its totient is φ = 331211184.

The previous prime is 538218203. The next prime is 538218223. The reversal of 538218213 is 312812835.

It is an interprime number because it is at equal distance from previous prime (538218203) and next prime (538218223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 538218213 - 2¹⁶ = 538152677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538218203) 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, 6900195 + ... + 6900272.

It is an arithmetic number, because the mean of its divisors is an integer number (96603276).

Almost surely, 2^538218213 is an apocalyptic number.

It is an amenable number.

538218213 is a deficient number, since it is larger than the sum of its proper divisors (234607995).

538218213 is a wasteful number, since it uses less digits than its factorization.

538218213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800483.

The product of its digits is 11520, while the sum is 33.

The square root of 538218213 is about 23199.5304478345. The cubic root of 538218213 is about 813.4286473259.

The spelling of 538218213 in words is "five hundred thirty-eight million, two hundred eighteen thousand, two hundred thirteen".