18443452 has 12 divisors (see below), whose sum is σ = 33974920. Its totient is φ = 8736336.

The previous prime is 18443443. The next prime is 18443461. The reversal of 18443452 is 25434481.

It is an interprime number because it is at equal distance from previous prime (18443443) and next prime (18443461).

It is a congruent number.

It is an unprimeable number.

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, 121263 + ... + 121414.

Almost surely, 2^18443452 is an apocalyptic number.

It is an amenable number.

18443452 is a deficient number, since it is larger than the sum of its proper divisors (15531468).

18443452 is a wasteful number, since it uses less digits than its factorization.

18443452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242700 (or 242698 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 18443452 is about 4294.5840310791. The cubic root of 18443452 is about 264.2088758638.

The spelling of 18443452 in words is "eighteen million, four hundred forty-three thousand, four hundred fifty-two".