2147187871 has 2 divisors, whose sum is σ = 2147187872. Its totient is φ = 2147187870.

The previous prime is 2147187841. The next prime is 2147187883. The reversal of 2147187871 is 1787817412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2147187871 - 2⁷ = 2147187743 is a prime.

It is a super-2 number, since 2×2147187871² = 9220831506739025282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2147187821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073593935 + 1073593936.

It is an arithmetic number, because the mean of its divisors is an integer number (1073593936).

Almost surely, 2^2147187871 is an apocalyptic number.

2147187871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2147187871 is an equidigital number, since it uses as much as digits as its factorization.

2147187871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175616, while the sum is 46.

The square root of 2147187871 is about 46337.7585884341. The cubic root of 2147187871 is about 1290.0999203495.

The spelling of 2147187871 in words is "two billion, one hundred forty-seven million, one hundred eighty-seven thousand, eight hundred seventy-one".