1270795851 has 16 divisors (see below), whose sum is σ = 2027481120. Its totient is φ = 782028000.

The previous prime is 1270795847. The next prime is 1270795913. The reversal of 1270795851 is 1585970721.

It is not a de Polignac number, because 1270795851 - 2² = 1270795847 is a prime.

It is a super-2 number, since 2×1270795851² = 3229844189837628402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1270795797 and 1270795806.

It is not an unprimeable number, because it can be changed into a prime (1270799851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809900 + ... + 1810601.

It is an arithmetic number, because the mean of its divisors is an integer number (126717570).

Almost surely, 2^1270795851 is an apocalyptic number.

1270795851 is a deficient number, since it is larger than the sum of its proper divisors (756685269).

1270795851 is a wasteful number, since it uses less digits than its factorization.

1270795851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620523 (or 3620517 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 45.

The square root of 1270795851 is about 35648.2236724356. The cubic root of 1270795851 is about 1083.1582936340.

The spelling of 1270795851 in words is "one billion, two hundred seventy million, seven hundred ninety-five thousand, eight hundred fifty-one".