1271206849 has 8 divisors (see below), whose sum is σ = 1447065792. Its totient is φ = 1105397040.

The previous prime is 1271206831. The next prime is 1271206897. The reversal of 1271206849 is 9486021721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1271206849 - 2²⁹ = 734335937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271206829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512014 + ... + 2512519.

It is an arithmetic number, because the mean of its divisors is an integer number (180883224).

Almost surely, 2^1271206849 is an apocalyptic number.

It is an amenable number.

1271206849 is a deficient number, since it is larger than the sum of its proper divisors (175858943).

1271206849 is a wasteful number, since it uses less digits than its factorization.

1271206849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024567.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1271206849 is about 35653.9878414743. The cubic root of 1271206849 is about 1083.2750519389.

The spelling of 1271206849 in words is "one billion, two hundred seventy-one million, two hundred six thousand, eight hundred forty-nine".