15181450189 has 2 divisors, whose sum is σ = 15181450190. Its totient is φ = 15181450188.

The previous prime is 15181450187. The next prime is 15181450217. The reversal of 15181450189 is 98105418151.

15181450189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9436568164 + 5744882025 = 97142^2 + 75795^2 .

It is a cyclic number.

It is not a de Polignac number, because 15181450189 - 2¹ = 15181450187 is a prime.

Together with 15181450187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15181450181) 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 as a sum of consecutive naturals, namely, 7590725094 + 7590725095.

It is an arithmetic number, because the mean of its divisors is an integer number (7590725095).

Almost surely, 2^15181450189 is an apocalyptic number.

It is an amenable number.

15181450189 is a deficient number, since it is larger than the sum of its proper divisors (1).

15181450189 is an equidigital number, since it uses as much as digits as its factorization.

15181450189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 43.

The spelling of 15181450189 in words is "fifteen billion, one hundred eighty-one million, four hundred fifty thousand, one hundred eighty-nine".