18686054 has 8 divisors (see below), whose sum is σ = 28301520. Its totient is φ = 9252216.

The previous prime is 18686047. The next prime is 18686089. The reversal of 18686054 is 45068681.

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

It is a super-2 number, since 2×18686054² = 698337228181832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18685999 and 18686017.

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, 45149 + ... + 45560.

It is an arithmetic number, because the mean of its divisors is an integer number (3537690).

Almost surely, 2^18686054 is an apocalyptic number.

18686054 is a deficient number, since it is larger than the sum of its proper divisors (9615466).

18686054 is a wasteful number, since it uses less digits than its factorization.

18686054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90814.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 18686054 is about 4322.7368645339. The cubic root of 18686054 is about 265.3622860224.

The spelling of 18686054 in words is "eighteen million, six hundred eighty-six thousand, fifty-four".