18530697 has 16 divisors (see below), whose sum is σ = 26376192. Its totient is φ = 11531520.

The previous prime is 18530693. The next prime is 18530711. The reversal of 18530697 is 79603581.

It is not a de Polignac number, because 18530697 - 2² = 18530693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18530693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5047 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (1648512).

Almost surely, 2^18530697 is an apocalyptic number.

18530697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18530697 is a deficient number, since it is larger than the sum of its proper divisors (7845495).

18530697 is a wasteful number, since it uses less digits than its factorization.

18530697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 18530697 is about 4304.7296082333. The cubic root of 18530697 is about 264.6248256887.

The spelling of 18530697 in words is "eighteen million, five hundred thirty thousand, six hundred ninety-seven".