189205405469 has 4 divisors (see below), whose sum is σ = 189219810144. Its totient is φ = 189191000796.

The previous prime is 189205405463. The next prime is 189205405523. The reversal of 189205405469 is 964504502981.

189205405469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189205405469 - 2¹⁶ = 189205339933 is a prime.

It is a super-2 number, since 2×189205405469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189205405469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189205405463) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7182617 + ... + 7208910.

It is an arithmetic number, because the mean of its divisors is an integer number (47304952536).

Almost surely, 2^189205405469 is an apocalyptic number.

It is an amenable number.

189205405469 is a deficient number, since it is larger than the sum of its proper divisors (14404675).

189205405469 is a wasteful number, since it uses less digits than its factorization.

189205405469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14404674.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 189205405469 in words is "one hundred eighty-nine billion, two hundred five million, four hundred five thousand, four hundred sixty-nine".