189309685563 has 12 divisors (see below), whose sum is σ = 273451538568. Its totient is φ = 126204511680.

The previous prime is 189309685541. The next prime is 189309685567. The reversal of 189309685563 is 365586903981.

189309685563 is a `hidden beast` number, since 1 + 8 + 9 + 3 + 0 + 9 + 68 + 5 + 563 = 666.

It is not a de Polignac number, because 189309685563 - 2¹⁴ = 189309669179 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 189309685563.

It is not an unprimeable number, because it can be changed into a prime (189309685567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 689856 + ... + 924402.

It is an arithmetic number, because the mean of its divisors is an integer number (22787628214).

Almost surely, 2^189309685563 is an apocalyptic number.

189309685563 is a deficient number, since it is larger than the sum of its proper divisors (84141853005).

189309685563 is a wasteful number, since it uses less digits than its factorization.

189309685563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324234 (or 324231 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 189309685563 in words is "one hundred eighty-nine billion, three hundred nine million, six hundred eighty-five thousand, five hundred sixty-three".