18152805 has 16 divisors (see below), whose sum is σ = 31685184. Its totient is φ = 8801280.

The previous prime is 18152789. The next prime is 18152833. The reversal of 18152805 is 50825181.

It is not a de Polignac number, because 18152805 - 2⁴ = 18152789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54844 + ... + 55173.

It is an arithmetic number, because the mean of its divisors is an integer number (1980324).

Almost surely, 2^18152805 is an apocalyptic number.

18152805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18152805 is a deficient number, since it is larger than the sum of its proper divisors (13532379).

18152805 is a wasteful number, since it uses less digits than its factorization.

18152805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110036.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 18152805 is about 4260.6108716943. The cubic root of 18152805 is about 262.8136477649.

Adding to 18152805 its reverse (50825181), we get a palindrome (68977986).

The spelling of 18152805 in words is "eighteen million, one hundred fifty-two thousand, eight hundred five".