18079946 has 8 divisors (see below), whose sum is σ = 27256800. Its totient is φ = 8994348.

The previous prime is 18079933. The next prime is 18079949. The reversal of 18079946 is 64997081.

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

It is a junction number, because it is equal to n+sod(n) for n = 18079897 and 18079906.

It is not an unprimeable number, because it can be changed into a prime (18079949) 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 3 ways as a sum of consecutive naturals, for example, 22316 + ... + 23111.

It is an arithmetic number, because the mean of its divisors is an integer number (3407100).

Almost surely, 2^18079946 is an apocalyptic number.

18079946 is a deficient number, since it is larger than the sum of its proper divisors (9176854).

18079946 is a wasteful number, since it uses less digits than its factorization.

18079946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45628.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 18079946 is about 4252.0519752233. The cubic root of 18079946 is about 262.4615623235.

The spelling of 18079946 in words is "eighteen million, seventy-nine thousand, nine hundred forty-six".