18234609 has 8 divisors (see below), whose sum is σ = 24474432. Its totient is φ = 12075600.

The previous prime is 18234589. The next prime is 18234611. The reversal of 18234609 is 90643281.

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

It is not a de Polignac number, because 18234609 - 2¹⁷ = 18103537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18234609.

It is not an unprimeable number, because it can be changed into a prime (18233609) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19674 + ... + 20579.

It is an arithmetic number, because the mean of its divisors is an integer number (3059304).

Almost surely, 2^18234609 is an apocalyptic number.

It is an amenable number.

18234609 is a deficient number, since it is larger than the sum of its proper divisors (6239823).

18234609 is a wasteful number, since it uses less digits than its factorization.

18234609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 18234609 is about 4270.2001124069. The cubic root of 18234609 is about 263.2078383321.

The spelling of 18234609 in words is "eighteen million, two hundred thirty-four thousand, six hundred nine".