187339213 has 2 divisors, whose sum is σ = 187339214. Its totient is φ = 187339212.

The previous prime is 187339211. The next prime is 187339249. The reversal of 187339213 is 312933781.

187339213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133125444 + 54213769 = 11538^2 + 7363^2 .

It is a cyclic number.

It is not a de Polignac number, because 187339213 - 2¹ = 187339211 is a prime.

Together with 187339211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187339211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93669606 + 93669607.

It is an arithmetic number, because the mean of its divisors is an integer number (93669607).

Almost surely, 2^187339213 is an apocalyptic number.

It is an amenable number.

187339213 is a deficient number, since it is larger than the sum of its proper divisors (1).

187339213 is an equidigital number, since it uses as much as digits as its factorization.

187339213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 187339213 is about 13687.1915673012. The cubic root of 187339213 is about 572.1934698945.

The spelling of 187339213 in words is "one hundred eighty-seven million, three hundred thirty-nine thousand, two hundred thirteen".