981222189 has 8 divisors (see below), whose sum is σ = 1308545760. Its totient is φ = 654023376.

The previous prime is 981222181. The next prime is 981222191.

981222189 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981222189 - 2³ = 981222181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 981222189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981222181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10962 + ... + 45635.

It is an arithmetic number, because the mean of its divisors is an integer number (163568220).

Almost surely, 2^981222189 is an apocalyptic number.

It is an amenable number.

981222189 is a deficient number, since it is larger than the sum of its proper divisors (327323571).

981222189 is a wasteful number, since it uses less digits than its factorization.

981222189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62379.

The product of its digits is 41472, while the sum is 42.

The square root of 981222189 is about 31324.4663003219. The cubic root of 981222189 is about 993.7011372992.

The spelling of 981222189 in words is "nine hundred eighty-one million, two hundred twenty-two thousand, one hundred eighty-nine".