1268165522 has 30 divisors (see below), whose sum is σ = 2074686873. Its totient is φ = 581378928.

The previous prime is 1268165519. The next prime is 1268165533. The reversal of 1268165522 is 2255618621.

It can be written as a sum of positive squares in 8 ways, for example, as 1116161281 + 152004241 = 33409^2 + 12329^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25181.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 8511104 + ... + 8511252.

Almost surely, 2^1268165522 is an apocalyptic number.

1268165522 is a deficient number, since it is larger than the sum of its proper divisors (806521351).

1268165522 is an frugal number, since it uses more digits than its factorization.

1268165522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 164 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 1268165522 is about 35611.3117141169. The cubic root of 1268165522 is about 1082.4104602657.

The spelling of 1268165522 in words is "one billion, two hundred sixty-eight million, one hundred sixty-five thousand, five hundred twenty-two".