271081891 has 2 divisors, whose sum is σ = 271081892. Its totient is φ = 271081890.

The previous prime is 271081871. The next prime is 271081913. The reversal of 271081891 is 198180172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 271081891 - 2⁵ = 271081859 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 271081891.

It is not a weakly prime, because it can be changed into another prime (271081871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135540945 + 135540946.

It is an arithmetic number, because the mean of its divisors is an integer number (135540946).

Almost surely, 2^271081891 is an apocalyptic number.

271081891 is a deficient number, since it is larger than the sum of its proper divisors (1).

271081891 is an equidigital number, since it uses as much as digits as its factorization.

271081891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 271081891 is about 16464.5647072736. The cubic root of 271081891 is about 647.1925392887.

The spelling of 271081891 in words is "two hundred seventy-one million, eighty-one thousand, eight hundred ninety-one".