189150631922 has 18 divisors (see below), whose sum is σ = 330056064333. Its totient is φ = 81062711352.

The previous prime is 189150631921. The next prime is 189150631949. The reversal of 189150631922 is 229136051981.

It can be written as a sum of positive squares in 2 ways, for example, as 130703217841 + 58447414081 = 361529^2 + 241759^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=307531.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189150631921) 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 8 ways as a sum of consecutive naturals, for example, 4283468 + ... + 4327400.

Almost surely, 2^189150631922 is an apocalyptic number.

189150631922 is a deficient number, since it is larger than the sum of its proper divisors (140905432411).

189150631922 is an frugal number, since it uses more digits than its factorization.

189150631922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87882 (or 43942 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 189150631922 in words is "one hundred eighty-nine billion, one hundred fifty million, six hundred thirty-one thousand, nine hundred twenty-two".