1267793855 has 4 divisors (see below), whose sum is σ = 1521352632. Its totient is φ = 1014235080.

The previous prime is 1267793837. The next prime is 1267793893. The reversal of 1267793855 is 5583977621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5583977621 = 19 ⋅293893559.

It is not a de Polignac number, because 1267793855 - 2²⁰ = 1266745279 is a prime.

It is a super-2 number, since 2×1267793855² = 3214602517551522050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1267793797 and 1267793806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126779381 + ... + 126779390.

It is an arithmetic number, because the mean of its divisors is an integer number (380338158).

Almost surely, 2^1267793855 is an apocalyptic number.

1267793855 is a deficient number, since it is larger than the sum of its proper divisors (253558777).

1267793855 is an equidigital number, since it uses as much as digits as its factorization.

1267793855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253558776.

The product of its digits is 3175200, while the sum is 53.

The square root of 1267793855 is about 35606.0929476965. The cubic root of 1267793855 is about 1082.3047076257.

The spelling of 1267793855 in words is "one billion, two hundred sixty-seven million, seven hundred ninety-three thousand, eight hundred fifty-five".