189317307203 has 16 divisors (see below), whose sum is σ = 196339308480. Its totient is φ = 182328846336.

The previous prime is 189317307173. The next prime is 189317307209. The reversal of 189317307203 is 302703713981.

It is a cyclic number.

It is not a de Polignac number, because 189317307203 - 2¹⁰ = 189317306179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189317307209) 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, 20184851 + ... + 20194227.

It is an arithmetic number, because the mean of its divisors is an integer number (12271206780).

Almost surely, 2^189317307203 is an apocalyptic number.

189317307203 is a deficient number, since it is larger than the sum of its proper divisors (7022001277).

189317307203 is an equidigital number, since it uses as much as digits as its factorization.

189317307203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 189317307203 in words is "one hundred eighty-nine billion, three hundred seventeen million, three hundred seven thousand, two hundred three".