189618190368 has 24 divisors (see below), whose sum is σ = 497747749968. Its totient is φ = 63206063424.

The previous prime is 189618190357. The next prime is 189618190373. The reversal of 189618190368 is 863091816981.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 987594646 + ... + 987594837.

It is an arithmetic number, because the mean of its divisors is an integer number (20739489582).

Almost surely, 2^189618190368 is an apocalyptic number.

It is an amenable number.

189618190368 is an abundant number, since it is smaller than the sum of its proper divisors (308129559600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189618190368 is a wasteful number, since it uses less digits than its factorization.

189618190368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975189496 (or 1975189488 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 60.

The spelling of 189618190368 in words is "one hundred eighty-nine billion, six hundred eighteen million, one hundred ninety thousand, three hundred sixty-eight".