18147235 has 8 divisors (see below), whose sum is σ = 21970080. Its totient is φ = 14388864.

The previous prime is 18147221. The next prime is 18147251. The reversal of 18147235 is 53274181.

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 18147235 - 2¹⁹ = 17622947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18147197 and 18147206.

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, 15495 + ... + 16624.

It is an arithmetic number, because the mean of its divisors is an integer number (2746260).

Almost surely, 2^18147235 is an apocalyptic number.

18147235 is a deficient number, since it is larger than the sum of its proper divisors (3822845).

18147235 is a wasteful number, since it uses less digits than its factorization.

18147235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32237.

The product of its digits is 6720, while the sum is 31.

The square root of 18147235 is about 4259.9571594090. The cubic root of 18147235 is about 262.7867644674.

The spelling of 18147235 in words is "eighteen million, one hundred forty-seven thousand, two hundred thirty-five".