1268275057 has 4 divisors (see below), whose sum is σ = 1449457216. Its totient is φ = 1087092900.

The previous prime is 1268275031. The next prime is 1268275087. The reversal of 1268275057 is 7505728621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7505728621 = 23 ⋅326336027.

It is a cyclic number.

It is not a de Polignac number, because 1268275057 - 2⁷ = 1268274929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268275027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90591069 + ... + 90591082.

It is an arithmetic number, because the mean of its divisors is an integer number (362364304).

Almost surely, 2^1268275057 is an apocalyptic number.

It is an amenable number.

1268275057 is a deficient number, since it is larger than the sum of its proper divisors (181182159).

1268275057 is an equidigital number, since it uses as much as digits as its factorization.

1268275057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181182158.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 1268275057 is about 35612.8496051636. The cubic root of 1268275057 is about 1082.4416229740.

The spelling of 1268275057 in words is "one billion, two hundred sixty-eight million, two hundred seventy-five thousand, fifty-seven".