18499414 has 4 divisors (see below), whose sum is σ = 27749124. Its totient is φ = 9249706.
The previous prime is 18499379. The next prime is 18499421. The reversal of 18499414 is 41499481.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41499481 = 151 ⋅274831.
It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4624852 + ... + 4624855.
It is an arithmetic number, because the mean of its divisors is an integer number (6937281).
Almost surely, 218499414 is an apocalyptic number.
18499414 is a deficient number, since it is larger than the sum of its proper divisors (9249710).
18499414 is an equidigital number, since it uses as much as digits as its factorization.
18499414 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9249709.
The product of its digits is 41472, while the sum is 40.
The square root of 18499414 is about 4301.0945118656. The cubic root of 18499414 is about 264.4758310922.
It can be divided in two parts, 184 and 99414, that multiplied together give a triangular number (18292176 = T6048).
The spelling of 18499414 in words is "eighteen million, four hundred ninety-nine thousand, four hundred fourteen".
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