18530745 has 8 divisors (see below), whose sum is σ = 29649216. Its totient is φ = 9883056.

The previous prime is 18530741. The next prime is 18530749. The reversal of 18530745 is 54703581.

It is an interprime number because it is at equal distance from previous prime (18530741) and next prime (18530749).

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

It is not a de Polignac number, because 18530745 - 2² = 18530741 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18530741) 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, 617677 + ... + 617706.

It is an arithmetic number, because the mean of its divisors is an integer number (3706152).

Almost surely, 2^18530745 is an apocalyptic number.

18530745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18530745 is a deficient number, since it is larger than the sum of its proper divisors (11118471).

18530745 is a wasteful number, since it uses less digits than its factorization.

18530745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235391.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 18530745 is about 4304.7351834927. The cubic root of 18530745 is about 264.6250541741.

The spelling of 18530745 in words is "eighteen million, five hundred thirty thousand, seven hundred forty-five".