18942235 has 8 divisors (see below), whose sum is σ = 24479280. Its totient is φ = 13988064.

The previous prime is 18942223. The next prime is 18942239. The reversal of 18942235 is 53224981.

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 18942235 - 2¹⁹ = 18417947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18942235.

It is not an unprimeable number, because it can be changed into a prime (18942239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145645 + ... + 145774.

It is an arithmetic number, because the mean of its divisors is an integer number (3059910).

Almost surely, 2^18942235 is an apocalyptic number.

18942235 is a deficient number, since it is larger than the sum of its proper divisors (5537045).

18942235 is a wasteful number, since it uses less digits than its factorization.

18942235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291437.

The product of its digits is 17280, while the sum is 34.

The square root of 18942235 is about 4352.2677996649. The cubic root of 18942235 is about 266.5694689168.

It can be divided in two parts, 189 and 42235, that added together give a palindrome (42424).

The spelling of 18942235 in words is "eighteen million, nine hundred forty-two thousand, two hundred thirty-five".