1664012033 has 2 divisors, whose sum is σ = 1664012034. Its totient is φ = 1664012032.

The previous prime is 1664011957. The next prime is 1664012041. The reversal of 1664012033 is 3302104661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1541975824 + 122036209 = 39268^2 + 11047^2 .

It is an emirp because it is prime and its reverse (3302104661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1664012033 - 2¹⁸ = 1663749889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1664011993 and 1664012011.

It is not a weakly prime, because it can be changed into another prime (1664012093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832006016 + 832006017.

It is an arithmetic number, because the mean of its divisors is an integer number (832006017).

Almost surely, 2^1664012033 is an apocalyptic number.

It is an amenable number.

1664012033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664012033 is an equidigital number, since it uses as much as digits as its factorization.

1664012033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1664012033 is about 40792.3036000665. The cubic root of 1664012033 is about 1185.0012837435.

Adding to 1664012033 its reverse (3302104661), we get a palindrome (4966116694).

The spelling of 1664012033 in words is "one billion, six hundred sixty-four million, twelve thousand, thirty-three".