2064659081 has 2 divisors, whose sum is σ = 2064659082. Its totient is φ = 2064659080.

The previous prime is 2064659071. The next prime is 2064659153. The reversal of 2064659081 is 1809564602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1765680400 + 298978681 = 42020^2 + 17291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2064659081 is a prime.

It is a super-2 number, since 2×2064659081² = 8525634241511529122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2064659011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032329540 + 1032329541.

It is an arithmetic number, because the mean of its divisors is an integer number (1032329541).

Almost surely, 2^2064659081 is an apocalyptic number.

It is an amenable number.

2064659081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064659081 is an equidigital number, since it uses as much as digits as its factorization.

2064659081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 2064659081 is about 45438.5197932327. The cubic root of 2064659081 is about 1273.3548600581.

The spelling of 2064659081 in words is "two billion, sixty-four million, six hundred fifty-nine thousand, eighty-one".