6918900189 has 12 divisors (see below), whose sum is σ = 9364963104. Its totient is φ = 4543746504.

The previous prime is 6918900119. The next prime is 6918900203. The reversal of 6918900189 is 9810098196.

It is a happy number.

It is not a de Polignac number, because 6918900189 - 2¹⁵ = 6918867421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918900119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243417 + ... + 270350.

It is an arithmetic number, because the mean of its divisors is an integer number (780413592).

Almost surely, 2^6918900189 is an apocalyptic number.

It is an amenable number.

6918900189 is a deficient number, since it is larger than the sum of its proper divisors (2446062915).

6918900189 is an equidigital number, since it uses as much as digits as its factorization.

6918900189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513904 (or 513837 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 6918900189 is about 83179.9265989097. The cubic root of 6918900189 is about 1905.5149269691.

The spelling of 6918900189 in words is "six billion, nine hundred eighteen million, nine hundred thousand, one hundred eighty-nine".