18860443 has 6 divisors (see below), whose sum is σ = 21939756. Its totient is φ = 16166052.

The previous prime is 18860423. The next prime is 18860449. The reversal of 18860443 is 34406881.

It is not a de Polignac number, because 18860443 - 2²¹ = 16763291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18860399 and 18860408.

It is not an unprimeable number, because it can be changed into a prime (18860449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192405 + ... + 192502.

It is an arithmetic number, because the mean of its divisors is an integer number (3656626).

Almost surely, 2^18860443 is an apocalyptic number.

18860443 is a deficient number, since it is larger than the sum of its proper divisors (3079313).

18860443 is an equidigital number, since it uses as much as digits as its factorization.

18860443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384921 (or 384914 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 18860443 is about 4342.8611536636. The cubic root of 18860443 is about 266.1852357042.

The spelling of 18860443 in words is "eighteen million, eight hundred sixty thousand, four hundred forty-three".