1671086971 has 2 divisors, whose sum is σ = 1671086972. Its totient is φ = 1671086970.

The previous prime is 1671086947. The next prime is 1671086987. The reversal of 1671086971 is 1796801761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1671086971 - 2¹⁷ = 1670955899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1671086071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835543485 + 835543486.

It is an arithmetic number, because the mean of its divisors is an integer number (835543486).

Almost surely, 2^1671086971 is an apocalyptic number.

1671086971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671086971 is an equidigital number, since it uses as much as digits as its factorization.

1671086971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 1671086971 is about 40878.9306489297. The cubic root of 1671086971 is about 1186.6783462726.

The spelling of 1671086971 in words is "one billion, six hundred seventy-one million, eighty-six thousand, nine hundred seventy-one".