1264849277 has 2 divisors, whose sum is σ = 1264849278. Its totient is φ = 1264849276.

The previous prime is 1264849273. The next prime is 1264849291. The reversal of 1264849277 is 7729484621.

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., 987593476 + 277255801 = 31426^2 + 16651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264849277 - 2² = 1264849273 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264849273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632424638 + 632424639.

It is an arithmetic number, because the mean of its divisors is an integer number (632424639).

Almost surely, 2^1264849277 is an apocalyptic number.

It is an amenable number.

1264849277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264849277 is an equidigital number, since it uses as much as digits as its factorization.

1264849277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 1264849277 is about 35564.7195546373. The cubic root of 1264849277 is about 1081.4661377670.

The spelling of 1264849277 in words is "one billion, two hundred sixty-four million, eight hundred forty-nine thousand, two hundred seventy-seven".