164240473 has 2 divisors, whose sum is σ = 164240474. Its totient is φ = 164240472.

The previous prime is 164240441. The next prime is 164240507. The reversal of 164240473 is 374042461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92871769 + 71368704 = 9637^2 + 8448^2 .

It is a cyclic number.

It is not a de Polignac number, because 164240473 - 2⁵ = 164240441 is a prime.

It is not a weakly prime, because it can be changed into another prime (164240423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82120236 + 82120237.

It is an arithmetic number, because the mean of its divisors is an integer number (82120237).

Almost surely, 2^164240473 is an apocalyptic number.

It is an amenable number.

164240473 is a deficient number, since it is larger than the sum of its proper divisors (1).

164240473 is an equidigital number, since it uses as much as digits as its factorization.

164240473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 164240473 is about 12815.6339289167. The cubic root of 164240473 is about 547.6377729910.

The spelling of 164240473 in words is "one hundred sixty-four million, two hundred forty thousand, four hundred seventy-three".