18050805 has 24 divisors (see below), whose sum is σ = 31760352. Its totient is φ = 9481824.

The previous prime is 18050801. The next prime is 18050807. The reversal of 18050805 is 50805081.

It is not a de Polignac number, because 18050805 - 2² = 18050801 is a prime.

It is a super-2 number, since 2×18050805² = 651663122296050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18050801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22 + ... + 6008.

It is an arithmetic number, because the mean of its divisors is an integer number (1323348).

Almost surely, 2^18050805 is an apocalyptic number.

18050805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18050805 is a deficient number, since it is larger than the sum of its proper divisors (13709547).

18050805 is a wasteful number, since it uses less digits than its factorization.

18050805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6065 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 18050805 is about 4248.6238948629. The cubic root of 18050805 is about 262.3204758907.

Adding to 18050805 its reverse (50805081), we get a palindrome (68855886).

The spelling of 18050805 in words is "eighteen million, fifty thousand, eight hundred five".