981202189 has 6 divisors (see below), whose sum is σ = 1078511630. Its totient is φ = 892001880.

The previous prime is 981202181. The next prime is 981202207.

981202189 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 847799689 + 133402500 = 29117^2 + 11550^2 .

It is not a de Polignac number, because 981202189 - 2³ = 981202181 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 (981202181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4054434 + ... + 4054675.

Almost surely, 2^981202189 is an apocalyptic number.

It is an amenable number.

981202189 is a deficient number, since it is larger than the sum of its proper divisors (97309441).

981202189 is a wasteful number, since it uses less digits than its factorization.

981202189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109131 (or 8109120 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 981202189 is about 31324.1470594173. The cubic root of 981202189 is about 993.6943858016.

The spelling of 981202189 in words is "nine hundred eighty-one million, two hundred two thousand, one hundred eighty-nine".