18480917 has 32 divisors (see below), whose sum is σ = 24192000. Its totient is φ = 13724928.

The previous prime is 18480911. The next prime is 18480971. The reversal of 18480917 is 71908481.

It is not a de Polignac number, because 18480917 - 2¹⁰ = 18479893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123959 + ... + 124107.

It is an arithmetic number, because the mean of its divisors is an integer number (756000).

Almost surely, 2^18480917 is an apocalyptic number.

It is an amenable number.

18480917 is a deficient number, since it is larger than the sum of its proper divisors (5711083).

18480917 is a wasteful number, since it uses less digits than its factorization.

18480917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 18480917 is about 4298.9437074705. The cubic root of 18480917 is about 264.3876545908.

The spelling of 18480917 in words is "eighteen million, four hundred eighty thousand, nine hundred seventeen".