18146530 has 8 divisors (see below), whose sum is σ = 32663772. Its totient is φ = 7258608.

The previous prime is 18146521. The next prime is 18146549. The reversal of 18146530 is 3564181.

It can be written as a sum of positive squares in 2 ways, for example, as 17164449 + 982081 = 4143^2 + 991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907317 + ... + 907336.

Almost surely, 2^18146530 is an apocalyptic number.

18146530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18146530 is a deficient number, since it is larger than the sum of its proper divisors (14517242).

18146530 is a wasteful number, since it uses less digits than its factorization.

18146530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814660.

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

The square root of 18146530 is about 4259.8744112943. The cubic root of 18146530 is about 262.7833614317.

The spelling of 18146530 in words is "eighteen million, one hundred forty-six thousand, five hundred thirty".