18994607 has 8 divisors (see below), whose sum is σ = 19461552. Its totient is φ = 18532800.

The previous prime is 18994597. The next prime is 18994609. The reversal of 18994607 is 70649981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18994607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18994609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6803 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (2432694).

Almost surely, 2^18994607 is an apocalyptic number.

18994607 is a deficient number, since it is larger than the sum of its proper divisors (466945).

18994607 is a wasteful number, since it uses less digits than its factorization.

18994607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569.

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

The square root of 18994607 is about 4358.2802801105. The cubic root of 18994607 is about 266.8149156584.

The spelling of 18994607 in words is "eighteen million, nine hundred ninety-four thousand, six hundred seven".