1664112113 has 2 divisors, whose sum is σ = 1664112114. Its totient is φ = 1664112112.

The previous prime is 1664112103. The next prime is 1664112137. The reversal of 1664112113 is 3112114661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1664068849 + 43264 = 40793^2 + 208^2 .

It is an emirp because it is prime and its reverse (3112114661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1664112113 - 2⁶ = 1664112049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1664112103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832056056 + 832056057.

It is an arithmetic number, because the mean of its divisors is an integer number (832056057).

Almost surely, 2^1664112113 is an apocalyptic number.

It is an amenable number.

1664112113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664112113 is an equidigital number, since it uses as much as digits as its factorization.

1664112113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 1664112113 is about 40793.5302836124. The cubic root of 1664112113 is about 1185.0250400923.

Adding to 1664112113 its reverse (3112114661), we get a palindrome (4776226774).

The spelling of 1664112113 in words is "one billion, six hundred sixty-four million, one hundred twelve thousand, one hundred thirteen".