1268207449 has 8 divisors (see below), whose sum is σ = 1334252808. Its totient is φ = 1203834240.

The previous prime is 1268207441. The next prime is 1268207503. The reversal of 1268207449 is 9447028621.

It can be written as a sum of positive squares in 4 ways, for example, as 2271049 + 1265936400 = 1507^2 + 35580^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1268207449 - 2³ = 1268207441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268207441) 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, 416482 + ... + 419515.

It is an arithmetic number, because the mean of its divisors is an integer number (166781601).

Almost surely, 2^1268207449 is an apocalyptic number.

It is an amenable number.

1268207449 is a deficient number, since it is larger than the sum of its proper divisors (66045359).

1268207449 is an equidigital number, since it uses as much as digits as its factorization.

1268207449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836075.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 1268207449 is about 35611.9003845625. The cubic root of 1268207449 is about 1082.4223887095.

The spelling of 1268207449 in words is "one billion, two hundred sixty-eight million, two hundred seven thousand, four hundred forty-nine".