186944348389 has 16 divisors (see below), whose sum is σ = 206906400000. Its totient is φ = 168194819520.

The previous prime is 186944348377. The next prime is 186944348413. The reversal of 186944348389 is 983843449681.

It is a cyclic number.

It is not a de Polignac number, because 186944348389 - 2¹¹ = 186944346341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186944348309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2747389 + ... + 2814610.

It is an arithmetic number, because the mean of its divisors is an integer number (12931650000).

Almost surely, 2^186944348389 is an apocalyptic number.

186944348389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

186944348389 is a deficient number, since it is larger than the sum of its proper divisors (19962051611).

186944348389 is a wasteful number, since it uses less digits than its factorization.

186944348389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562108.

The product of its digits is 143327232, while the sum is 67.

The spelling of 186944348389 in words is "one hundred eighty-six billion, nine hundred forty-four million, three hundred forty-eight thousand, three hundred eighty-nine".