189364310727 has 4 divisors (see below), whose sum is σ = 252485747640. Its totient is φ = 126242873816.

The previous prime is 189364310701. The next prime is 189364310747. The reversal of 189364310727 is 727013463981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 189364310727 - 2⁷ = 189364310599 is a prime.

It is a super-2 number, since 2×189364310727² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189364310727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189364310747) 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, 31560718452 + ... + 31560718457.

It is an arithmetic number, because the mean of its divisors is an integer number (63121436910).

Almost surely, 2^189364310727 is an apocalyptic number.

189364310727 is a deficient number, since it is larger than the sum of its proper divisors (63121436913).

189364310727 is an equidigital number, since it uses as much as digits as its factorization.

189364310727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63121436912.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 189364310727 in words is "one hundred eighty-nine billion, three hundred sixty-four million, three hundred ten thousand, seven hundred twenty-seven".