164210239 has 2 divisors, whose sum is σ = 164210240. Its totient is φ = 164210238.

The previous prime is 164210237. The next prime is 164210257. The reversal of 164210239 is 932012461.

It is a weak prime.

It is an emirp because it is prime and its reverse (932012461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164210239 - 2¹ = 164210237 is a prime.

Together with 164210237, 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 (164210237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82105119 + 82105120.

It is an arithmetic number, because the mean of its divisors is an integer number (82105120).

Almost surely, 2^164210239 is an apocalyptic number.

164210239 is a deficient number, since it is larger than the sum of its proper divisors (1).

164210239 is an equidigital number, since it uses as much as digits as its factorization.

164210239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 164210239 is about 12814.4542997351. The cubic root of 164210239 is about 547.6041671930.

It can be divided in two parts, 1642 and 10239, that added together give a square (11881 = 109²).

The spelling of 164210239 in words is "one hundred sixty-four million, two hundred ten thousand, two hundred thirty-nine".