18484474 has 8 divisors (see below), whose sum is σ = 29357748. Its totient is φ = 8698560.

The previous prime is 18484447. The next prime is 18484519. The reversal of 18484474 is 47448481.

It can be written as a sum of positive squares in 2 ways, for example, as 18275625 + 208849 = 4275^2 + 457^2 .

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

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, 271797 + ... + 271864.

Almost surely, 2^18484474 is an apocalyptic number.

18484474 is a deficient number, since it is larger than the sum of its proper divisors (10873274).

18484474 is a wasteful number, since it uses less digits than its factorization.

18484474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543680.

The product of its digits is 114688, while the sum is 40.

The square root of 18484474 is about 4299.3573938439. The cubic root of 18484474 is about 264.4046156280.

The spelling of 18484474 in words is "eighteen million, four hundred eighty-four thousand, four hundred seventy-four".