18412443 has 48 divisors (see below), whose sum is σ = 32288256. Its totient is φ = 9884160.

The previous prime is 18412439. The next prime is 18412447. The reversal of 18412443 is 34421481.

It is an interprime number because it is at equal distance from previous prime (18412439) and next prime (18412447).

It is not a de Polignac number, because 18412443 - 2² = 18412439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18412447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140488 + ... + 140618.

It is an arithmetic number, because the mean of its divisors is an integer number (672672).

Almost surely, 2^18412443 is an apocalyptic number.

18412443 is a deficient number, since it is larger than the sum of its proper divisors (13875813).

18412443 is a wasteful number, since it uses less digits than its factorization.

18412443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 261 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 18412443 is about 4290.9722674471. The cubic root of 18412443 is about 264.0607212256.

The spelling of 18412443 in words is "eighteen million, four hundred twelve thousand, four hundred forty-three".