164240014493 has 2 divisors, whose sum is σ = 164240014494. Its totient is φ = 164240014492.

The previous prime is 164240014487. The next prime is 164240014571. The reversal of 164240014493 is 394410042461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110833728889 + 53406285604 = 332917^2 + 231098^2 .

It is a cyclic number.

It is not a de Polignac number, because 164240014493 - 2¹⁸ = 164239752349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164240014793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82120007246 + 82120007247.

It is an arithmetic number, because the mean of its divisors is an integer number (82120007247).

Almost surely, 2^164240014493 is an apocalyptic number.

It is an amenable number.

164240014493 is a deficient number, since it is larger than the sum of its proper divisors (1).

164240014493 is an equidigital number, since it uses as much as digits as its factorization.

164240014493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 164240014493 in words is "one hundred sixty-four billion, two hundred forty million, fourteen thousand, four hundred ninety-three".