1268778027 has 16 divisors (see below), whose sum is σ = 1846091520. Its totient is φ = 768708000.

The previous prime is 1268778001. The next prime is 1268778053. The reversal of 1268778027 is 7208778621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1268778001) and next prime (1268778053).

It is not a de Polignac number, because 1268778027 - 2²⁰ = 1267729451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268778097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190402 + ... + 196952.

It is an arithmetic number, because the mean of its divisors is an integer number (115380720).

Almost surely, 2^1268778027 is an apocalyptic number.

1268778027 is a deficient number, since it is larger than the sum of its proper divisors (577313493).

1268778027 is a wasteful number, since it uses less digits than its factorization.

1268778027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12434.

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 1268778027 is about 35619.9105417181. The cubic root of 1268778027 is about 1082.5846949113.

The spelling of 1268778027 in words is "one billion, two hundred sixty-eight million, seven hundred seventy-eight thousand, twenty-seven".