981363189 has 8 divisors (see below), whose sum is σ = 1311685120. Its totient is φ = 652641696.

The previous prime is 981363169. The next prime is 981363191.

981363189 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 981363189 - 2²⁷ = 847145461 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 (981363109) 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, 398677 + ... + 401130.

It is an arithmetic number, because the mean of its divisors is an integer number (163960640).

Almost surely, 2^981363189 is an apocalyptic number.

It is an amenable number.

981363189 is a deficient number, since it is larger than the sum of its proper divisors (330321931).

981363189 is a wasteful number, since it uses less digits than its factorization.

981363189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800219.

The product of its digits is 279936, while the sum is 48.

The square root of 981363189 is about 31326.7168563831. The cubic root of 981363189 is about 993.7487327542.

The spelling of 981363189 in words is "nine hundred eighty-one million, three hundred sixty-three thousand, one hundred eighty-nine".