164444953 has 2 divisors, whose sum is σ = 164444954. Its totient is φ = 164444952.

The previous prime is 164444947. The next prime is 164444957. The reversal of 164444953 is 359444461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162001984 + 2442969 = 12728^2 + 1563^2 .

It is a cyclic number.

It is not a de Polignac number, because 164444953 - 2¹³ = 164436761 is a prime.

It is not a weakly prime, because it can be changed into another prime (164444957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82222476 + 82222477.

It is an arithmetic number, because the mean of its divisors is an integer number (82222477).

Almost surely, 2^164444953 is an apocalyptic number.

It is an amenable number.

164444953 is a deficient number, since it is larger than the sum of its proper divisors (1).

164444953 is an equidigital number, since it uses as much as digits as its factorization.

164444953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 164444953 is about 12823.6092033405. The cubic root of 164444953 is about 547.8649490938.

The spelling of 164444953 in words is "one hundred sixty-four million, four hundred forty-four thousand, nine hundred fifty-three".