18660045 has 8 divisors (see below), whose sum is σ = 29856096. Its totient is φ = 9952016.

The previous prime is 18660023. The next prime is 18660073. The reversal of 18660045 is 54006681.

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

It is a cyclic number.

It is not a de Polignac number, because 18660045 - 2⁹ = 18659533 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18659994 and 18660021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621987 + ... + 622016.

It is an arithmetic number, because the mean of its divisors is an integer number (3732012).

Almost surely, 2^18660045 is an apocalyptic number.

18660045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18660045 is a deficient number, since it is larger than the sum of its proper divisors (11196051).

18660045 is a wasteful number, since it uses less digits than its factorization.

18660045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244011.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 18660045 is about 4319.7274219562. The cubic root of 18660045 is about 265.2391101614.

The spelling of 18660045 in words is "eighteen million, six hundred sixty thousand, forty-five".