186376340 has 36 divisors (see below), whose sum is σ = 404464788. Its totient is φ = 72138240.

The previous prime is 186376331. The next prime is 186376387. The reversal of 186376340 is 43673681.

It can be written as a sum of positive squares in 2 ways, for example, as 43191184 + 143185156 = 6572^2 + 11966^2 .

It is a super-2 number, since 2×186376340² = 69472280223591200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 186376294 and 186376303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14372 + ... + 24068.

It is an arithmetic number, because the mean of its divisors is an integer number (11235133).

Almost surely, 2^186376340 is an apocalyptic number.

186376340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186376340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202232394).

186376340 is an abundant number, since it is smaller than the sum of its proper divisors (218088448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

186376340 is a wasteful number, since it uses less digits than its factorization.

186376340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768 (or 9735 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 186376340 is about 13651.9720187232. The cubic root of 186376340 is about 571.2114789035.

The spelling of 186376340 in words is "one hundred eighty-six million, three hundred seventy-six thousand, three hundred forty".