164441573 has 2 divisors, whose sum is σ = 164441574. Its totient is φ = 164441572.

The previous prime is 164441533. The next prime is 164441617. The reversal of 164441573 is 375144461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123698884 + 40742689 = 11122^2 + 6383^2 .

It is a cyclic number.

It is not a de Polignac number, because 164441573 - 2¹⁴ = 164425189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164441533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82220786 + 82220787.

It is an arithmetic number, because the mean of its divisors is an integer number (82220787).

Almost surely, 2^164441573 is an apocalyptic number.

It is an amenable number.

164441573 is a deficient number, since it is larger than the sum of its proper divisors (1).

164441573 is an equidigital number, since it uses as much as digits as its factorization.

164441573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 164441573 is about 12823.4774144925. The cubic root of 164441573 is about 547.8611954644.

The spelling of 164441573 in words is "one hundred sixty-four million, four hundred forty-one thousand, five hundred seventy-three".