18696493 has 8 divisors (see below), whose sum is σ = 19591488. Its totient is φ = 17808384.

The previous prime is 18696487. The next prime is 18696521. The reversal of 18696493 is 39469681.

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-18696493 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 (18696463) 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, 4330 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (2448936).

Almost surely, 2^18696493 is an apocalyptic number.

It is an amenable number.

18696493 is a deficient number, since it is larger than the sum of its proper divisors (894995).

18696493 is a wasteful number, since it uses less digits than its factorization.

18696493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its digits is 279936, while the sum is 46.

The square root of 18696493 is about 4323.9441485755. The cubic root of 18696493 is about 265.4116918738.

The spelling of 18696493 in words is "eighteen million, six hundred ninety-six thousand, four hundred ninety-three".