18830505 has 8 divisors (see below), whose sum is σ = 30128832. Its totient is φ = 10042928.

The previous prime is 18830477. The next prime is 18830507. The reversal of 18830505 is 50503881.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18830505 - 2⁵ = 18830473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18830507) 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, 627669 + ... + 627698.

It is an arithmetic number, because the mean of its divisors is an integer number (3766104).

Almost surely, 2^18830505 is an apocalyptic number.

18830505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18830505 is a deficient number, since it is larger than the sum of its proper divisors (11298327).

18830505 is a wasteful number, since it uses less digits than its factorization.

18830505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255375.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 18830505 is about 4339.4129787334. The cubic root of 18830505 is about 266.0443186563.

The spelling of 18830505 in words is "eighteen million, eight hundred thirty thousand, five hundred five".