18146949 has 8 divisors (see below), whose sum is σ = 24216000. Its totient is φ = 12087936.

The previous prime is 18146927. The next prime is 18146959. The reversal of 18146949 is 94964181.

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

It is not a de Polignac number, because 18146949 - 2⁵ = 18146917 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 18146949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18146959) 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, 4552 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (3027000).

Almost surely, 2^18146949 is an apocalyptic number.

It is an amenable number.

18146949 is a deficient number, since it is larger than the sum of its proper divisors (6069051).

18146949 is a wasteful number, since it uses less digits than its factorization.

18146949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019.

The product of its digits is 62208, while the sum is 42.

The square root of 18146949 is about 4259.9235908640. The cubic root of 18146949 is about 262.7853839558.

The spelling of 18146949 in words is "eighteen million, one hundred forty-six thousand, nine hundred forty-nine".