189364311949 has 4 divisors (see below), whose sum is σ = 194482266364. Its totient is φ = 184246357536.

The previous prime is 189364311947. The next prime is 189364311973. The reversal of 189364311949 is 949113463981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165104068900 + 24260243049 = 406330^2 + 155757^2 .

It is a cyclic number.

It is not a de Polignac number, because 189364311949 - 2¹ = 189364311947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189364311893 and 189364311902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189364311947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558977152 + ... + 2558977225.

It is an arithmetic number, because the mean of its divisors is an integer number (48620566591).

Almost surely, 2^189364311949 is an apocalyptic number.

It is an amenable number.

189364311949 is a deficient number, since it is larger than the sum of its proper divisors (5117954415).

189364311949 is an equidigital number, since it uses as much as digits as its factorization.

189364311949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117954414.

The product of its digits is 5038848, while the sum is 58.

The spelling of 189364311949 in words is "one hundred eighty-nine billion, three hundred sixty-four million, three hundred eleven thousand, nine hundred forty-nine".