18454474 has 8 divisors (see below), whose sum is σ = 27881280. Its totient is φ = 9160716.

The previous prime is 18454451. The next prime is 18454477. The reversal of 18454474 is 47445481.

It is a happy number.

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

It is a super-2 number, since 2×18454474² = 681135221233352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18454477) 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, 32914 + ... + 33469.

It is an arithmetic number, because the mean of its divisors is an integer number (3485160).

Almost surely, 2^18454474 is an apocalyptic number.

18454474 is a deficient number, since it is larger than the sum of its proper divisors (9426806).

18454474 is a wasteful number, since it uses less digits than its factorization.

18454474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66524.

The product of its digits is 71680, while the sum is 37.

The square root of 18454474 is about 4295.8670836049. The cubic root of 18454474 is about 264.2614967131.

The spelling of 18454474 in words is "eighteen million, four hundred fifty-four thousand, four hundred seventy-four".