189912354008938 has 32 divisors (see below), whose sum is σ = 327140582616000. Its totient is φ = 81775733397120.

The previous prime is 189912354008921. The next prime is 189912354008939. The reversal of 189912354008938 is 839800453219981.

It is not an unprimeable number, because it can be changed into a prime (189912354008939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5795283 + ... + 20332486.

It is an arithmetic number, because the mean of its divisors is an integer number (10223143206750).

Almost surely, 2^{189912354008938} is an apocalyptic number.

189912354008938 is a deficient number, since it is larger than the sum of its proper divisors (137228228607062).

189912354008938 is a wasteful number, since it uses less digits than its factorization.

189912354008938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26145190.

The product of its (nonzero) digits is 134369280, while the sum is 70.

The spelling of 189912354008938 in words is "one hundred eighty-nine trillion, nine hundred twelve billion, three hundred fifty-four million, eight thousand, nine hundred thirty-eight".