1964238113 has 2 divisors, whose sum is σ = 1964238114. Its totient is φ = 1964238112.

The previous prime is 1964238109. The next prime is 1964238131. The reversal of 1964238113 is 3118324691.

Together with next prime (1964238131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1608651664 + 355586449 = 40108^2 + 18857^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964238113 - 2² = 1964238109 is a prime.

It is not a weakly prime, because it can be changed into another prime (1964238173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982119056 + 982119057.

It is an arithmetic number, because the mean of its divisors is an integer number (982119057).

Almost surely, 2^1964238113 is an apocalyptic number.

It is an amenable number.

1964238113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964238113 is an equidigital number, since it uses as much as digits as its factorization.

1964238113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 1964238113 is about 44319.7260032144. The cubic root of 1964238113 is about 1252.3663150558.

The spelling of 1964238113 in words is "one billion, nine hundred sixty-four million, two hundred thirty-eight thousand, one hundred thirteen".