18379443 has 4 divisors (see below), whose sum is σ = 24505928. Its totient is φ = 12252960.

The previous prime is 18379433. The next prime is 18379453. The reversal of 18379443 is 34497381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34497381 = 3 ⋅11499127.

It is an interprime number because it is at equal distance from previous prime (18379433) and next prime (18379453).

It is not a de Polignac number, because 18379443 - 2⁵ = 18379411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18379433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063238 + ... + 3063243.

It is an arithmetic number, because the mean of its divisors is an integer number (6126482).

Almost surely, 2^18379443 is an apocalyptic number.

18379443 is a deficient number, since it is larger than the sum of its proper divisors (6126485).

18379443 is an equidigital number, since it uses as much as digits as its factorization.

18379443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126484.

The product of its digits is 72576, while the sum is 39.

The square root of 18379443 is about 4287.1252605913. The cubic root of 18379443 is about 263.9028711795.

The spelling of 18379443 in words is "eighteen million, three hundred seventy-nine thousand, four hundred forty-three".