188491900017 has 8 divisors (see below), whose sum is σ = 252624723424. Its totient is φ = 125010171648.

The previous prime is 188491899989. The next prime is 188491900019. The reversal of 188491900017 is 710009194881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 188491900017 - 2²⁰ = 188490851441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188491900019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162773083 + ... + 162774240.

It is an arithmetic number, because the mean of its divisors is an integer number (31578090428).

Almost surely, 2^188491900017 is an apocalyptic number.

It is an amenable number.

188491900017 is a deficient number, since it is larger than the sum of its proper divisors (64132823407).

188491900017 is a wasteful number, since it uses less digits than its factorization.

188491900017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325547519.

The product of its (nonzero) digits is 145152, while the sum is 48.

The spelling of 188491900017 in words is "one hundred eighty-eight billion, four hundred ninety-one million, nine hundred thousand, seventeen".