189094631893 has 4 divisors (see below), whose sum is σ = 199046980960. Its totient is φ = 179142282828.

The previous prime is 189094631881. The next prime is 189094631903. The reversal of 189094631893 is 398136490981.

189094631893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189094631893 - 2²⁹ = 188557760981 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 (189094632893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4976174505 + ... + 4976174542.

It is an arithmetic number, because the mean of its divisors is an integer number (49761745240).

Almost surely, 2^189094631893 is an apocalyptic number.

It is an amenable number.

189094631893 is a deficient number, since it is larger than the sum of its proper divisors (9952349067).

189094631893 is an equidigital number, since it uses as much as digits as its factorization.

189094631893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952349066.

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 189094631893 in words is "one hundred eighty-nine billion, ninety-four million, six hundred thirty-one thousand, eight hundred ninety-three".