18996693 has 8 divisors (see below), whose sum is σ = 25349856. Its totient is φ = 12654000.

The previous prime is 18996683. The next prime is 18996709. The reversal of 18996693 is 39669981.

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

It is not a de Polignac number, because 18996693 - 2¹⁴ = 18980309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996613) 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, 4038 + ... + 7368.

It is an arithmetic number, because the mean of its divisors is an integer number (3168732).

Almost surely, 2^18996693 is an apocalyptic number.

It is an amenable number.

18996693 is a deficient number, since it is larger than the sum of its proper divisors (6353163).

18996693 is a wasteful number, since it uses less digits than its factorization.

18996693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235.

The product of its digits is 629856, while the sum is 51.

The square root of 18996693 is about 4358.5195881170. The cubic root of 18996693 is about 266.8246825629.

The spelling of 18996693 in words is "eighteen million, nine hundred ninety-six thousand, six hundred ninety-three".