1264264081 has 2 divisors, whose sum is σ = 1264264082. Its totient is φ = 1264264080.

The previous prime is 1264264049. The next prime is 1264264121. The reversal of 1264264081 is 1804624621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 829958481 + 434305600 = 28809^2 + 20840^2 .

It is an emirp because it is prime and its reverse (1804624621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264264081 - 2⁵ = 1264264049 is a prime.

It is a super-2 number, since 2×1264264081² = 3196727333013549122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1264261081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632132040 + 632132041.

It is an arithmetic number, because the mean of its divisors is an integer number (632132041).

Almost surely, 2^1264264081 is an apocalyptic number.

It is an amenable number.

1264264081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264264081 is an equidigital number, since it uses as much as digits as its factorization.

1264264081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 1264264081 is about 35556.4914045242. The cubic root of 1264264081 is about 1081.2993280936.

The spelling of 1264264081 in words is "one billion, two hundred sixty-four million, two hundred sixty-four thousand, eighty-one".