988142161 has 2 divisors, whose sum is σ = 988142162. Its totient is φ = 988142160.

The previous prime is 988142149. The next prime is 988142171. The reversal of 988142161 is 161241889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543775761 + 444366400 = 23319^2 + 21080^2 .

It is a cyclic number.

It is not a de Polignac number, because 988142161 - 2²³ = 979753553 is a prime.

It is not a weakly prime, because it can be changed into another prime (988142171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494071080 + 494071081.

It is an arithmetic number, because the mean of its divisors is an integer number (494071081).

Almost surely, 2^988142161 is an apocalyptic number.

It is an amenable number.

988142161 is a deficient number, since it is larger than the sum of its proper divisors (1).

988142161 is an equidigital number, since it uses as much as digits as its factorization.

988142161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 40.

The square root of 988142161 is about 31434.7285816181. The cubic root of 988142161 is about 996.0316601093.

The spelling of 988142161 in words is "nine hundred eighty-eight million, one hundred forty-two thousand, one hundred sixty-one".