189420304863 has 16 divisors (see below), whose sum is σ = 261954560736. Its totient is φ = 121650710400.

The previous prime is 189420304837. The next prime is 189420304933. The reversal of 189420304863 is 368403024981.

It is not a de Polignac number, because 189420304863 - 2⁵ = 189420304831 is a prime.

It is a super-2 number, since 2×189420304863² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189420304823) 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, 8436756 + ... + 8459177.

It is an arithmetic number, because the mean of its divisors is an integer number (16372160046).

Almost surely, 2^189420304863 is an apocalyptic number.

189420304863 is a deficient number, since it is larger than the sum of its proper divisors (72534255873).

189420304863 is a wasteful number, since it uses less digits than its factorization.

189420304863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16896074.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 189420304863 in words is "one hundred eighty-nine billion, four hundred twenty million, three hundred four thousand, eight hundred sixty-three".