147865871 has 2 divisors, whose sum is σ = 147865872. Its totient is φ = 147865870.

The previous prime is 147865849. The next prime is 147865889. The reversal of 147865871 is 178568741.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147865871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147865841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73932935 + 73932936.

It is an arithmetic number, because the mean of its divisors is an integer number (73932936).

Almost surely, 2^147865871 is an apocalyptic number.

147865871 is a deficient number, since it is larger than the sum of its proper divisors (1).

147865871 is an equidigital number, since it uses as much as digits as its factorization.

147865871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 47.

The square root of 147865871 is about 12160.0111430870. The cubic root of 147865871 is about 528.7974050388.

The spelling of 147865871 in words is "one hundred forty-seven million, eight hundred sixty-five thousand, eight hundred seventy-one".