189794086388 has 12 divisors (see below), whose sum is σ = 332145196992. Its totient is φ = 94895458680.

The previous prime is 189794086381. The next prime is 189794086403. The reversal of 189794086388 is 883680497981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189794086381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102428 + ... + 624563.

It is an arithmetic number, because the mean of its divisors is an integer number (27678766416).

Almost surely, 2^189794086388 is an apocalyptic number.

It is an amenable number.

189794086388 is a deficient number, since it is larger than the sum of its proper divisors (142351110604).

189794086388 is a wasteful number, since it uses less digits than its factorization.

189794086388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792262 (or 792260 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 71.

The spelling of 189794086388 in words is "one hundred eighty-nine billion, seven hundred ninety-four million, eighty-six thousand, three hundred eighty-eight".