18808274 has 8 divisors (see below), whose sum is σ = 28282620. Its totient is φ = 9380736.

The previous prime is 18808267. The next prime is 18808291. The reversal of 18808274 is 47280881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15721225 + 3087049 = 3965^2 + 1757^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10679 + ... + 12314.

Almost surely, 2^18808274 is an apocalyptic number.

18808274 is a deficient number, since it is larger than the sum of its proper divisors (9474346).

18808274 is a wasteful number, since it uses less digits than its factorization.

18808274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23404.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 18808274 is about 4336.8507006813. The cubic root of 18808274 is about 265.9395815064.

The spelling of 18808274 in words is "eighteen million, eight hundred eight thousand, two hundred seventy-four".