189119811892 has 36 divisors (see below), whose sum is σ = 364320093060. Its totient is φ = 85836424960.

The previous prime is 189119811869. The next prime is 189119811893. The reversal of 189119811892 is 298118911981.

It can be written as a sum of positive squares in 2 ways, for example, as 161149256356 + 27970555536 = 401434^2 + 167244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189119811893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39084 + ... + 616252.

It is an arithmetic number, because the mean of its divisors is an integer number (10120002585).

Almost surely, 2^189119811892 is an apocalyptic number.

It is an amenable number.

189119811892 is a deficient number, since it is larger than the sum of its proper divisors (175200281168).

189119811892 is a wasteful number, since it uses less digits than its factorization.

189119811892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577872 (or 577859 counting only the distinct ones).

The product of its digits is 746496, while the sum is 58.

The spelling of 189119811892 in words is "one hundred eighty-nine billion, one hundred nineteen million, eight hundred eleven thousand, eight hundred ninety-two".