1664301169 has 2 divisors, whose sum is σ = 1664301170. Its totient is φ = 1664301168.

The previous prime is 1664301109. The next prime is 1664301187. The reversal of 1664301169 is 9611034661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1663008400 + 1292769 = 40780^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1664301169 - 2⁹ = 1664300657 is a prime.

It is a super-2 number, since 2×1664301169² = 5539796762269533122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1664301109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832150584 + 832150585.

It is an arithmetic number, because the mean of its divisors is an integer number (832150585).

Almost surely, 2^1664301169 is an apocalyptic number.

It is an amenable number.

1664301169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664301169 is an equidigital number, since it uses as much as digits as its factorization.

1664301169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1664301169 is about 40795.8474479940. The cubic root of 1664301169 is about 1185.0699143947.

The spelling of 1664301169 in words is "one billion, six hundred sixty-four million, three hundred one thousand, one hundred sixty-nine".