988161 has 4 divisors (see below), whose sum is σ = 1317552. Its totient is φ = 658772.

The previous prime is 988157. The next prime is 988199. The reversal of 988161 is 161889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 988161 - 2² = 988157 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988161.

It is not an unprimeable number, because it can be changed into a prime (988111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164691 + ... + 164696.

It is an arithmetic number, because the mean of its divisors is an integer number (329388).

It is a Proth number, since it is equal to 965 ⋅ 2¹⁰ + 1 and 965 < 2¹⁰.

2⁹⁸⁸¹⁶¹ is an apocalyptic number.

It is an amenable number.

988161 is a deficient number, since it is larger than the sum of its proper divisors (329391).

988161 is a wasteful number, since it uses less digits than its factorization.

988161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329390.

The product of its digits is 3456, while the sum is 33.

The square root of 988161 is about 994.0628752750. The cubic root of 988161 is about 99.6037989874.

The spelling of 988161 in words is "nine hundred eighty-eight thousand, one hundred sixty-one".