18690054 has 8 divisors (see below), whose sum is σ = 37380120. Its totient is φ = 6230016.

The previous prime is 18690047. The next prime is 18690059. The reversal of 18690054 is 45009681.

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

18690054 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 18689997 and 18690024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18690059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557499 + ... + 1557510.

It is an arithmetic number, because the mean of its divisors is an integer number (4672515).

Almost surely, 2^18690054 is an apocalyptic number.

18690054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18690054 is a wasteful number, since it uses less digits than its factorization.

18690054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115014.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 18690054 is about 4323.1995096225. The cubic root of 18690054 is about 265.3812194547.

The spelling of 18690054 in words is "eighteen million, six hundred ninety thousand, fifty-four".