18933055 has 8 divisors (see below), whose sum is σ = 22748544. Its totient is φ = 15127200.

The previous prime is 18933043. The next prime is 18933067. The reversal of 18933055 is 55033981.

It is an interprime number because it is at equal distance from previous prime (18933043) and next prime (18933067).

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

It is a de Polignac number, because none of the positive numbers 2^k-18933055 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18933055.

It is a congruent number.

It is an unprimeable number.

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, 3045 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^18933055 is an apocalyptic number.

18933055 is a deficient number, since it is larger than the sum of its proper divisors (3815489).

18933055 is an equidigital number, since it uses as much as digits as its factorization.

18933055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 18933055 is about 4351.2130492542. The cubic root of 18933055 is about 266.5263993222.

The spelling of 18933055 in words is "eighteen million, nine hundred thirty-three thousand, fifty-five".