18234508 has 6 divisors (see below), whose sum is σ = 31910396. Its totient is φ = 9117252.

The previous prime is 18234499. The next prime is 18234511. The reversal of 18234508 is 80543281.

It is a self number, because there is not a number n which added to its sum of digits gives 18234508.

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 as a sum of consecutive naturals, namely, 2279310 + ... + 2279317.

Almost surely, 2^18234508 is an apocalyptic number.

It is an amenable number.

18234508 is a deficient number, since it is larger than the sum of its proper divisors (13675888).

18234508 is a wasteful number, since it uses less digits than its factorization.

18234508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558631 (or 4558629 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 18234508 is about 4270.1882862469. The cubic root of 18234508 is about 263.2073523690.

Adding to 18234508 its reverse (80543281), we get a palindrome (98777789).

The spelling of 18234508 in words is "eighteen million, two hundred thirty-four thousand, five hundred eight".