1271920883 has 2 divisors, whose sum is σ = 1271920884. Its totient is φ = 1271920882.

The previous prime is 1271920873. The next prime is 1271920919. The reversal of 1271920883 is 3880291721.

It is a weak prime.

It is an emirp because it is prime and its reverse (3880291721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271920883 - 2¹² = 1271916787 is a prime.

It is a super-2 number, since 2×1271920883² = 3235565465222999378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1271920883.

It is not a weakly prime, because it can be changed into another prime (1271920823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635960441 + 635960442.

It is an arithmetic number, because the mean of its divisors is an integer number (635960442).

Almost surely, 2^1271920883 is an apocalyptic number.

1271920883 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271920883 is an equidigital number, since it uses as much as digits as its factorization.

1271920883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1271920883 is about 35663.9998177434. Note that the first 3 decimals coincide. The cubic root of 1271920883 is about 1083.4778383542.

The spelling of 1271920883 in words is "one billion, two hundred seventy-one million, nine hundred twenty thousand, eight hundred eighty-three".