189471793369 has 4 divisors (see below), whose sum is σ = 199443993040. Its totient is φ = 179499593700.

The previous prime is 189471793351. The next prime is 189471793457. The reversal of 189471793369 is 963397174981.

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 189471793369 - 2⁹ = 189471792857 is a prime.

It is a super-2 number, since 2×189471793369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189471796369) 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 3 ways as a sum of consecutive naturals, for example, 4986099807 + ... + 4986099844.

It is an arithmetic number, because the mean of its divisors is an integer number (49860998260).

Almost surely, 2^189471793369 is an apocalyptic number.

189471793369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

189471793369 is a deficient number, since it is larger than the sum of its proper divisors (9972199671).

189471793369 is an equidigital number, since it uses as much as digits as its factorization.

189471793369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9972199670.

The product of its digits is 61725888, while the sum is 67.

The spelling of 189471793369 in words is "one hundred eighty-nine billion, four hundred seventy-one million, seven hundred ninety-three thousand, three hundred sixty-nine".