18975474 has 48 divisors (see below), whose sum is σ = 47653632. Its totient is φ = 5344704.

The previous prime is 18975469. The next prime is 18975493. The reversal of 18975474 is 47457981.

It is a happy number.

18975474 is a `hidden beast` number, since 18 + 97 + 547 + 4 = 666.

It is a super-2 number, since 2×18975474² = 720137227049352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8167 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (992784).

Almost surely, 2^18975474 is an apocalyptic number.

18975474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18975474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23826816).

18975474 is an abundant number, since it is smaller than the sum of its proper divisors (28678158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18975474 is a wasteful number, since it uses less digits than its factorization.

18975474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2148 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 18975474 is about 4356.0847099201. The cubic root of 18975474 is about 266.7252992602.

The spelling of 18975474 in words is "eighteen million, nine hundred seventy-five thousand, four hundred seventy-four".