1267945655 has 16 divisors (see below), whose sum is σ = 1543449600. Its totient is φ = 999791520.

The previous prime is 1267945643. The next prime is 1267945699. The reversal of 1267945655 is 5565497621.

It is not a de Polignac number, because 1267945655 - 2³⁰ = 194203831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257870 + ... + 262740.

It is an arithmetic number, because the mean of its divisors is an integer number (96465600).

Almost surely, 2^1267945655 is an apocalyptic number.

1267945655 is a deficient number, since it is larger than the sum of its proper divisors (275503945).

1267945655 is an equidigital number, since it uses as much as digits as its factorization.

1267945655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614.

The product of its digits is 2268000, while the sum is 50.

The square root of 1267945655 is about 35608.2245415297. The cubic root of 1267945655 is about 1082.3479026865.

The spelling of 1267945655 in words is "one billion, two hundred sixty-seven million, nine hundred forty-five thousand, six hundred fifty-five".