18464043 has 16 divisors (see below), whose sum is σ = 26625536. Its totient is φ = 11314080.

The previous prime is 18463979. The next prime is 18464051. The reversal of 18464043 is 34046481.

It is not a de Polignac number, because 18464043 - 2⁶ = 18463979 is a prime.

It is a super-3 number, since 3×18464043³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18464043.

It is not an unprimeable number, because it can be changed into a prime (18464053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9696 + ... + 11442.

It is an arithmetic number, because the mean of its divisors is an integer number (1664096).

Almost surely, 2^18464043 is an apocalyptic number.

18464043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18464043 is a deficient number, since it is larger than the sum of its proper divisors (8161493).

18464043 is a wasteful number, since it uses less digits than its factorization.

18464043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 18464043 is about 4296.9806841549. The cubic root of 18464043 is about 264.3071637118.

The spelling of 18464043 in words is "eighteen million, four hundred sixty-four thousand, forty-three".