18480497 has 20 divisors (see below), whose sum is σ = 22183920. Its totient is φ = 15385608.

The previous prime is 18480493. The next prime is 18480503. The reversal of 18480497 is 79408481.

It is a happy number.

It is not a de Polignac number, because 18480497 - 2² = 18480493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18480491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103154 + ... + 103332.

It is an arithmetic number, because the mean of its divisors is an integer number (1109196).

Almost surely, 2^18480497 is an apocalyptic number.

It is an amenable number.

18480497 is a deficient number, since it is larger than the sum of its proper divisors (3703423).

18480497 is an frugal number, since it uses more digits than its factorization.

18480497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 18480497 is about 4298.8948579839. The cubic root of 18480497 is about 264.3856517383.

The spelling of 18480497 in words is "eighteen million, four hundred eighty thousand, four hundred ninety-seven".