1276285851 has 6 divisors (see below), whose sum is σ = 1843524020. Its totient is φ = 850857228.

The previous prime is 1276285831. The next prime is 1276285877. The reversal of 1276285851 is 1585826721.

1276285851 is a `hidden beast` number, since 1 + 2 + 7 + 62 + 8 + 585 + 1 = 666.

It is not a de Polignac number, because 1276285851 - 2⁷ = 1276285723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1276285797 and 1276285806.

It is not an unprimeable number, because it can be changed into a prime (1276285831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70904761 + ... + 70904778.

Almost surely, 2^1276285851 is an apocalyptic number.

1276285851 is a deficient number, since it is larger than the sum of its proper divisors (567238169).

1276285851 is a wasteful number, since it uses less digits than its factorization.

1276285851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141809545 (or 141809542 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 1276285851 is about 35725.1431207770. The cubic root of 1276285851 is about 1084.7158467878.

The spelling of 1276285851 in words is "one billion, two hundred seventy-six million, two hundred eighty-five thousand, eight hundred fifty-one".