981949189 has 16 divisors (see below), whose sum is σ = 1168376832. Its totient is φ = 816000768.

The previous prime is 981949159. The next prime is 981949217.

981949189 is nontrivially palindromic in base 10.

981949189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 981949189 - 2⁹ = 981948677 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 (981949159) 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, 91509 + ... + 101674.

It is an arithmetic number, because the mean of its divisors is an integer number (73023552).

Almost surely, 2^981949189 is an apocalyptic number.

It is an amenable number.

981949189 is a deficient number, since it is larger than the sum of its proper divisors (186427643).

981949189 is a wasteful number, since it uses less digits than its factorization.

981949189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193236.

The product of its digits is 1679616, while the sum is 58.

The square root of 981949189 is about 31336.0684994145. The cubic root of 981949189 is about 993.9464919842.

The spelling of 981949189 in words is "nine hundred eighty-one million, nine hundred forty-nine thousand, one hundred eighty-nine".