18414407 has 8 divisors (see below), whose sum is σ = 20142480. Its totient is φ = 16695360.

The previous prime is 18414377. The next prime is 18414413. The reversal of 18414407 is 70441481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18414407 - 2⁶ = 18414343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18414407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18413407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2453 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (2517810).

Almost surely, 2^18414407 is an apocalyptic number.

18414407 is a deficient number, since it is larger than the sum of its proper divisors (1728073).

18414407 is a wasteful number, since it uses less digits than its factorization.

18414407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 18414407 is about 4291.2011139074. The cubic root of 18414407 is about 264.0701097465.

Adding to 18414407 its reverse (70441481), we get a palindrome (88855888).

The spelling of 18414407 in words is "eighteen million, four hundred fourteen thousand, four hundred seven".