18034443 has 24 divisors (see below), whose sum is σ = 29903328. Its totient is φ = 10259712.

The previous prime is 18034441. The next prime is 18034451. The reversal of 18034443 is 34443081.

It is not a de Polignac number, because 18034443 - 2¹ = 18034441 is a prime.

It is a super-2 number, since 2×18034443² = 650482268640498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18034441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17971 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (1245972).

Almost surely, 2^18034443 is an apocalyptic number.

18034443 is a deficient number, since it is larger than the sum of its proper divisors (11868885).

18034443 is a wasteful number, since it uses less digits than its factorization.

18034443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 18034443 is about 4246.6978936581. The cubic root of 18034443 is about 262.2411925360.

The spelling of 18034443 in words is "eighteen million, thirty-four thousand, four hundred forty-three".