18099358 has 4 divisors (see below), whose sum is σ = 27149040. Its totient is φ = 9049678.

The previous prime is 18099331. The next prime is 18099379. The reversal of 18099358 is 85399081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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, 4524838 + ... + 4524841.

It is an arithmetic number, because the mean of its divisors is an integer number (6787260).

Almost surely, 2^18099358 is an apocalyptic number.

18099358 is a deficient number, since it is larger than the sum of its proper divisors (9049682).

18099358 is an equidigital number, since it uses as much as digits as its factorization.

18099358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049681.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 18099358 is about 4254.3340254381. The cubic root of 18099358 is about 262.5554615993. Note that the first 3 decimals are identical.

The spelling of 18099358 in words is "eighteen million, ninety-nine thousand, three hundred fifty-eight".