18043941 has 4 divisors (see below), whose sum is σ = 24058592. Its totient is φ = 12029292.

The previous prime is 18043933. The next prime is 18043943. The reversal of 18043941 is 14934081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18043941 - 2³ = 18043933 is a prime.

It is a super-2 number, since 2×18043941² = 651167613622962, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 18043899 and 18043908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043943) 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, 3007321 + ... + 3007326.

It is an arithmetic number, because the mean of its divisors is an integer number (6014648).

Almost surely, 2^18043941 is an apocalyptic number.

It is an amenable number.

18043941 is a deficient number, since it is larger than the sum of its proper divisors (6014651).

18043941 is an equidigital number, since it uses as much as digits as its factorization.

18043941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014650.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18043941 is about 4247.8160270897. The cubic root of 18043941 is about 262.2872216762.

The spelling of 18043941 in words is "eighteen million, forty-three thousand, nine hundred forty-one".