189173092065 has 32 divisors (see below), whose sum is σ = 320595428736. Its totient is φ = 94923709440.

The previous prime is 189173092063. The next prime is 189173092177. The reversal of 189173092065 is 560290371981.

It is not a de Polignac number, because 189173092065 - 2¹ = 189173092063 is a prime.

It is a super-2 number, since 2×189173092065² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 189173091999 and 189173092017.

It is not an unprimeable number, because it can be changed into a prime (189173092063) 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 31 ways as a sum of consecutive naturals, for example, 594495 + ... + 855435.

It is an arithmetic number, because the mean of its divisors is an integer number (10018607148).

Almost surely, 2^189173092065 is an apocalyptic number.

189173092065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189173092065 is a deficient number, since it is larger than the sum of its proper divisors (131422336671).

189173092065 is a wasteful number, since it uses less digits than its factorization.

189173092065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263809.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 189173092065 in words is "one hundred eighty-nine billion, one hundred seventy-three million, ninety-two thousand, sixty-five".