18419416 has 16 divisors (see below), whose sum is σ = 34586640. Its totient is φ = 9196320.

The previous prime is 18419413. The next prime is 18419431. The reversal of 18419416 is 61491481.

It is a pancake number, because a pancake can be divided into 18419416 parts by 6069 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419411) 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, 6546 + ... + 8926.

It is an arithmetic number, because the mean of its divisors is an integer number (2161665).

Almost surely, 2^18419416 is an apocalyptic number.

It is an amenable number.

18419416 is a deficient number, since it is larger than the sum of its proper divisors (16167224).

18419416 is a wasteful number, since it uses less digits than its factorization.

18419416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3350 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 18419416 is about 4291.7847103507. The cubic root of 18419416 is about 264.0940512771.

It can be divided in two parts, 184 and 19416, that added together give a square (19600 = 140²).

The spelling of 18419416 in words is "eighteen million, four hundred nineteen thousand, four hundred sixteen".