988161889 has 16 divisors (see below), whose sum is σ = 1163683584. Its totient is φ = 827251200.

The previous prime is 988161877. The next prime is 988161893.

988161889 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 988161889 - 2¹¹ = 988159841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988161809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53617 + ... + 69649.

It is an arithmetic number, because the mean of its divisors is an integer number (72730224).

Almost surely, 2^988161889 is an apocalyptic number.

It is an amenable number.

988161889 is a deficient number, since it is larger than the sum of its proper divisors (175521695).

988161889 is a wasteful number, since it uses less digits than its factorization.

988161889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16488.

The product of its digits is 1990656, while the sum is 58.

The square root of 988161889 is about 31435.0423731224. The cubic root of 988161889 is about 996.0382885691.

The spelling of 988161889 in words is "nine hundred eighty-eight million, one hundred sixty-one thousand, eight hundred eighty-nine".