18994046 has 8 divisors (see below), whose sum is σ = 29153784. Its totient is φ = 9276120.

The previous prime is 18994039. The next prime is 18994051. The reversal of 18994046 is 64049981.

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 = 18993994 and 18994012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110345 + ... + 110516.

It is an arithmetic number, because the mean of its divisors is an integer number (3644223).

Almost surely, 2^18994046 is an apocalyptic number.

18994046 is a deficient number, since it is larger than the sum of its proper divisors (10159738).

18994046 is a wasteful number, since it uses less digits than its factorization.

18994046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220906.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18994046 is about 4358.2159193872. The cubic root of 18994046 is about 266.8122888665.

The spelling of 18994046 in words is "eighteen million, nine hundred ninety-four thousand, forty-six".