18464042 has 4 divisors (see below), whose sum is σ = 27696066. Its totient is φ = 9232020.

The previous prime is 18463979. The next prime is 18464051. The reversal of 18464042 is 24046481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13845841 + 4618201 = 3721^2 + 2149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18463996 and 18464014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4616009 + ... + 4616012.

Almost surely, 2^18464042 is an apocalyptic number.

18464042 is a deficient number, since it is larger than the sum of its proper divisors (9232024).

18464042 is an equidigital number, since it uses as much as digits as its factorization.

18464042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232023.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 18464042 is about 4296.9805677941. The cubic root of 18464042 is about 264.3071589403.

The spelling of 18464042 in words is "eighteen million, four hundred sixty-four thousand, forty-two".