1964710081 has 2 divisors, whose sum is σ = 1964710082. Its totient is φ = 1964710080.

The previous prime is 1964710079. The next prime is 1964710087. The reversal of 1964710081 is 1800174691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1877922225 + 86787856 = 43335^2 + 9316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964710081 - 2¹ = 1964710079 is a prime.

It is a super-2 number, since 2×1964710081² = 7720171404766053122, which contains 22 as substring.

Together with 1964710079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1964710081.

It is not a weakly prime, because it can be changed into another prime (1964710087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982355040 + 982355041.

It is an arithmetic number, because the mean of its divisors is an integer number (982355041).

Almost surely, 2^1964710081 is an apocalyptic number.

It is an amenable number.

1964710081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964710081 is an equidigital number, since it uses as much as digits as its factorization.

1964710081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1964710081 is about 44325.0502650589. The cubic root of 1964710081 is about 1252.4666133998.

The spelling of 1964710081 in words is "one billion, nine hundred sixty-four million, seven hundred ten thousand, eighty-one".