982143887 has 2 divisors, whose sum is σ = 982143888. Its totient is φ = 982143886.

The previous prime is 982143881. The next prime is 982143919. The reversal of 982143887 is 788341289.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 982143887 - 2⁴ = 982143871 is a prime.

It is a super-2 number, since 2×982143887² = 1929213229542937538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (982143881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491071943 + 491071944.

It is an arithmetic number, because the mean of its divisors is an integer number (491071944).

Almost surely, 2^982143887 is an apocalyptic number.

982143887 is a deficient number, since it is larger than the sum of its proper divisors (1).

982143887 is an equidigital number, since it uses as much as digits as its factorization.

982143887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 982143887 is about 31339.1749572320. The cubic root of 982143887 is about 994.0121799063.

The spelling of 982143887 in words is "nine hundred eighty-two million, one hundred forty-three thousand, eight hundred eighty-seven".