1264228535 has 16 divisors (see below), whose sum is σ = 1536667200. Its totient is φ = 998359296.

The previous prime is 1264228529. The next prime is 1264228571. The reversal of 1264228535 is 5358224621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1264228535 - 2²⁰ = 1263179959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313502 + ... + 317508.

It is an arithmetic number, because the mean of its divisors is an integer number (96041700).

Almost surely, 2^1264228535 is an apocalyptic number.

1264228535 is a deficient number, since it is larger than the sum of its proper divisors (272438665).

1264228535 is an equidigital number, since it uses as much as digits as its factorization.

1264228535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810.

The product of its digits is 115200, while the sum is 38.

The square root of 1264228535 is about 35555.9915485421. The cubic root of 1264228535 is about 1081.2891940752.

The spelling of 1264228535 in words is "one billion, two hundred sixty-four million, two hundred twenty-eight thousand, five hundred thirty-five".