981101189 has 4 divisors (see below), whose sum is σ = 981300480. Its totient is φ = 980901900.

The previous prime is 981101183. The next prime is 981101197.

981101189 is nontrivially palindromic in base 10.

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 981101189 - 2¹² = 981097093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981101183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92069 + ... + 102170.

It is an arithmetic number, because the mean of its divisors is an integer number (245325120).

Almost surely, 2^981101189 is an apocalyptic number.

It is an amenable number.

981101189 is a deficient number, since it is larger than the sum of its proper divisors (199291).

981101189 is a wasteful number, since it uses less digits than its factorization.

981101189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199290.

The product of its (nonzero) digits is 5184, while the sum is 38.

The square root of 981101189 is about 31322.5348431445. The cubic root of 981101189 is about 993.6602893371.

It can be divided in two parts, 98110 and 1189, that added together give a palindrome (99299).

The spelling of 981101189 in words is "nine hundred eighty-one million, one hundred one thousand, one hundred eighty-nine".