18419116 has 12 divisors (see below), whose sum is σ = 32373432. Its totient is φ = 9169568.

The previous prime is 18419101. The next prime is 18419117. The reversal of 18419116 is 61191481.

It is not an unprimeable number, because it can be changed into a prime (18419117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8950 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (2697786).

Almost surely, 2^18419116 is an apocalyptic number.

It is an amenable number.

18419116 is a deficient number, since it is larger than the sum of its proper divisors (13954316).

18419116 is a wasteful number, since it uses less digits than its factorization.

18419116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000 (or 19998 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 18419116 is about 4291.7497597134. The cubic root of 18419116 is about 264.0926174885.

The spelling of 18419116 in words is "eighteen million, four hundred nineteen thousand, one hundred sixteen".