18329474 has 8 divisors (see below), whose sum is σ = 27512460. Its totient is φ = 9158656.

The previous prime is 18329473. The next prime is 18329477. The reversal of 18329474 is 47492381.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 748225 = 4193^2 + 865^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18329473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842 + ... + 7170.

Almost surely, 2^18329474 is an apocalyptic number.

18329474 is a deficient number, since it is larger than the sum of its proper divisors (9182986).

18329474 is a wasteful number, since it uses less digits than its factorization.

18329474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084.

The product of its digits is 48384, while the sum is 38.

The square root of 18329474 is about 4281.2934961294. The cubic root of 18329474 is about 263.6634926646.

The spelling of 18329474 in words is "eighteen million, three hundred twenty-nine thousand, four hundred seventy-four".