164254314391 has 2 divisors, whose sum is σ = 164254314392. Its totient is φ = 164254314390.

The previous prime is 164254314383. The next prime is 164254314407. The reversal of 164254314391 is 193413452461.

It is a weak prime.

It is an emirp because it is prime and its reverse (193413452461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164254314391 - 2³ = 164254314383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164254314361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82127157195 + 82127157196.

It is an arithmetic number, because the mean of its divisors is an integer number (82127157196).

Almost surely, 2^164254314391 is an apocalyptic number.

164254314391 is a deficient number, since it is larger than the sum of its proper divisors (1).

164254314391 is an equidigital number, since it uses as much as digits as its factorization.

164254314391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The spelling of 164254314391 in words is "one hundred sixty-four billion, two hundred fifty-four million, three hundred fourteen thousand, three hundred ninety-one".