1264545077 has 2 divisors, whose sum is σ = 1264545078.
Its totient is φ = 1264545076.
The previous prime is 1264544987. The next prime is 1264545091. The reversal of 1264545077 is 7705454621.
Adding to 1264545077 its reverse (7705454621), we get a palindrome (8969999698).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 783664036 + 480881041 = 27994^2 + 21929^2
It is a cyclic number.
It is not a de Polignac number, because 1264545077 - 28 = 1264544821 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1264745077) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632272538 + 632272539.
It is an arithmetic number, because the mean of its divisors is an integer number (632272539).
Almost surely, 21264545077 is an apocalyptic number.
It is an amenable number.
1264545077 is a deficient number, since it is larger than the sum of its proper divisors (1).
1264545077 is an equidigital number, since it uses as much as digits as its factorization.
1264545077 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 235200, while the sum is 41.
The square root of 1264545077 is about 35560.4425872345.
The cubic root of 1264545077 is about 1081.3794322118.
The spelling of 1264545077 in words is "one billion, two hundred sixty-four million, five hundred forty-five thousand, seventy-seven".