18849514 has 4 divisors (see below), whose sum is σ = 28274274. Its totient is φ = 9424756.

The previous prime is 18849511. The next prime is 18849527. The reversal of 18849514 is 41594881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41594881 = 397 ⋅104773.

It can be written as a sum of positive squares in only one way, i.e., 17918289 + 931225 = 4233^2 + 965^2 .

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 not an unprimeable number, because it can be changed into a prime (18849511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4712377 + ... + 4712380.

Almost surely, 2^18849514 is an apocalyptic number.

18849514 is a deficient number, since it is larger than the sum of its proper divisors (9424760).

18849514 is an equidigital number, since it uses as much as digits as its factorization.

18849514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424759.

The product of its digits is 46080, while the sum is 40.

The square root of 18849514 is about 4341.6026994648. The cubic root of 18849514 is about 266.1338106035.

The spelling of 18849514 in words is "eighteen million, eight hundred forty-nine thousand, five hundred fourteen".