189916384345 has 16 divisors (see below), whose sum is σ = 232767410688. Its totient is φ = 148688464320.

The previous prime is 189916384321. The next prime is 189916384373. The reversal of 189916384345 is 543483619981.

189916384345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189916384345 - 2⁵ = 189916384313 is a prime.

It is a super-2 number, since 2×189916384345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3868855 + ... + 3917635.

It is an arithmetic number, because the mean of its divisors is an integer number (14547963168).

Almost surely, 2^189916384345 is an apocalyptic number.

It is an amenable number.

189916384345 is a deficient number, since it is larger than the sum of its proper divisors (42851026343).

189916384345 is a wasteful number, since it uses less digits than its factorization.

189916384345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65400.

The product of its digits is 22394880, while the sum is 61.

The spelling of 189916384345 in words is "one hundred eighty-nine billion, nine hundred sixteen million, three hundred eighty-four thousand, three hundred forty-five".