186938343943 has 6 divisors (see below), whose sum is σ = 202424360784. Its totient is φ = 172558471176.

The previous prime is 186938343869. The next prime is 186938343953. The reversal of 186938343943 is 349343839681.

It is a de Polignac number, because none of the positive numbers 2^k-186938343943 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 (186938343953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553071855 + ... + 553072192.

It is an arithmetic number, because the mean of its divisors is an integer number (33737393464).

Almost surely, 2^186938343943 is an apocalyptic number.

186938343943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

186938343943 is a deficient number, since it is larger than the sum of its proper divisors (15486016841).

186938343943 is a wasteful number, since it uses less digits than its factorization.

186938343943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106144073 (or 1106144060 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 61.

The spelling of 186938343943 in words is "one hundred eighty-six billion, nine hundred thirty-eight million, three hundred forty-three thousand, nine hundred forty-three".