18294947 has 8 divisors (see below), whose sum is σ = 19994160. Its totient is φ = 16601760.

The previous prime is 18294917. The next prime is 18294949. The reversal of 18294947 is 74949281.

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 18294947 - 2⁶ = 18294883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18294898 and 18294907.

It is not an unprimeable number, because it can be changed into a prime (18294949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6929 + ... + 9197.

It is an arithmetic number, because the mean of its divisors is an integer number (2499270).

Almost surely, 2^18294947 is an apocalyptic number.

18294947 is a deficient number, since it is larger than the sum of its proper divisors (1699213).

18294947 is a wasteful number, since it uses less digits than its factorization.

18294947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013.

The product of its digits is 145152, while the sum is 44.

The square root of 18294947 is about 4277.2592860382. The cubic root of 18294947 is about 263.4978354021.

It can be divided in two parts, 1829 and 4947, that added together give a palindrome (6776).

The spelling of 18294947 in words is "eighteen million, two hundred ninety-four thousand, nine hundred forty-seven".