18407043 has 12 divisors (see below), whose sum is σ = 26626288. Its totient is φ = 12253680.

The previous prime is 18407041. The next prime is 18407071. The reversal of 18407043 is 34070481.

It is not a de Polignac number, because 18407043 - 2¹ = 18407041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18406998 and 18407016.

It is not an unprimeable number, because it can be changed into a prime (18407041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9138 + ... + 10968.

Almost surely, 2^18407043 is an apocalyptic number.

18407043 is a deficient number, since it is larger than the sum of its proper divisors (8219245).

18407043 is a wasteful number, since it uses less digits than its factorization.

18407043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 18407043 is about 4290.3429932815. The cubic root of 18407043 is about 264.0349041316.

The spelling of 18407043 in words is "eighteen million, four hundred seven thousand, forty-three".