18530132 has 12 divisors (see below), whose sum is σ = 32468436. Its totient is φ = 9253440.

The previous prime is 18530131. The next prime is 18530177. The reversal of 18530132 is 23103581.

It can be written as a sum of positive squares in 2 ways, for example, as 12988816 + 5541316 = 3604^2 + 2354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18530098 and 18530107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18530131) 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, 1382 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (2705703).

Almost surely, 2^18530132 is an apocalyptic number.

It is an amenable number.

18530132 is a deficient number, since it is larger than the sum of its proper divisors (13938304).

18530132 is a wasteful number, since it uses less digits than its factorization.

18530132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818 (or 5816 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 18530132 is about 4304.6639822407. The cubic root of 18530132 is about 264.6221361956.

The spelling of 18530132 in words is "eighteen million, five hundred thirty thousand, one hundred thirty-two".