189494103 has 16 divisors (see below), whose sum is σ = 262158336. Its totient is φ = 121621920.

The previous prime is 189494099. The next prime is 189494117. The reversal of 189494103 is 301494981.

It is not a de Polignac number, because 189494103 - 2² = 189494099 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189494143) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13150 + ... + 23492.

It is an arithmetic number, because the mean of its divisors is an integer number (16384896).

Almost surely, 2^189494103 is an apocalyptic number.

189494103 is a deficient number, since it is larger than the sum of its proper divisors (72664233).

189494103 is a wasteful number, since it uses less digits than its factorization.

189494103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 189494103 is about 13765.6857075846. The cubic root of 189494103 is about 574.3790175641.

The spelling of 189494103 in words is "one hundred eighty-nine million, four hundred ninety-four thousand, one hundred three".