186013540 has 24 divisors (see below), whose sum is σ = 404099640. Its totient is φ = 71839488.

The previous prime is 186013523. The next prime is 186013543. The reversal of 186013540 is 45310681.

186013540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 185995044 = 136^2 + 13638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 186013499 and 186013508.

It is not an unprimeable number, because it can be changed into a prime (186013543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159777 + ... + 160936.

It is an arithmetic number, because the mean of its divisors is an integer number (16837485).

Almost surely, 2^186013540 is an apocalyptic number.

186013540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

186013540 is an abundant number, since it is smaller than the sum of its proper divisors (218086100).

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

186013540 is a wasteful number, since it uses less digits than its factorization.

186013540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320751 (or 320749 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 186013540 is about 13638.6780884366. The cubic root of 186013540 is about 570.8405982464.

It can be divided in two parts, 1860 and 13540, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 186013540 in words is "one hundred eighty-six million, thirteen thousand, five hundred forty".