214538813 has 2 divisors, whose sum is σ = 214538814. Its totient is φ = 214538812.

The previous prime is 214538801. The next prime is 214538833. The reversal of 214538813 is 318835412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133934329 + 80604484 = 11573^2 + 8978^2 .

It is a cyclic number.

It is not a de Polignac number, because 214538813 - 2¹² = 214534717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214538833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107269406 + 107269407.

It is an arithmetic number, because the mean of its divisors is an integer number (107269407).

Almost surely, 2^214538813 is an apocalyptic number.

It is an amenable number.

214538813 is a deficient number, since it is larger than the sum of its proper divisors (1).

214538813 is an equidigital number, since it uses as much as digits as its factorization.

214538813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 214538813 is about 14647.1435099135. The cubic root of 214538813 is about 598.6439867629.

The spelling of 214538813 in words is "two hundred fourteen million, five hundred thirty-eight thousand, eight hundred thirteen".