18480111 has 16 divisors (see below), whose sum is σ = 26613216. Its totient is φ = 11339136.

The previous prime is 18480101. The next prime is 18480113. The reversal of 18480111 is 11108481.

It is not a de Polignac number, because 18480111 - 2⁵ = 18480079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480113) 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, 23521 + ... + 24293.

It is an arithmetic number, because the mean of its divisors is an integer number (1663326).

Almost surely, 2^18480111 is an apocalyptic number.

18480111 is a deficient number, since it is larger than the sum of its proper divisors (8133105).

18480111 is a wasteful number, since it uses less digits than its factorization.

18480111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402.

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 18480111 is about 4298.8499624900. The cubic root of 18480111 is about 264.3838109946.

Adding to 18480111 its reverse (11108481), we get a palindrome (29588592).

The spelling of 18480111 in words is "eighteen million, four hundred eighty thousand, one hundred eleven".