1268264289 has 8 divisors (see below), whose sum is σ = 1691419072. Its totient is φ = 845309520.

The previous prime is 1268264273. The next prime is 1268264303. The reversal of 1268264289 is 9824628621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1268264289 - 2⁴ = 1268264273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268254289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34522 + ... + 61059.

It is an arithmetic number, because the mean of its divisors is an integer number (211427384).

Almost surely, 2^1268264289 is an apocalyptic number.

It is an amenable number.

1268264289 is a deficient number, since it is larger than the sum of its proper divisors (423154783).

1268264289 is an equidigital number, since it uses as much as digits as its factorization.

1268264289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100007.

The product of its digits is 663552, while the sum is 48.

The square root of 1268264289 is about 35612.6984234556. The cubic root of 1268264289 is about 1082.4385595574.

The spelling of 1268264289 in words is "one billion, two hundred sixty-eight million, two hundred sixty-four thousand, two hundred eighty-nine".