18442094128 has 20 divisors (see below), whose sum is σ = 35733759768. Its totient is φ = 9220478720.

The previous prime is 18442094123. The next prime is 18442094221. The reversal of 18442094128 is 82149024481.

It is a super-2 number, since 2×18442094128² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18442094123) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 378183 + ... + 424153.

Almost surely, 2^18442094128 is an apocalyptic number.

It is an amenable number.

18442094128 is a deficient number, since it is larger than the sum of its proper divisors (17291665640).

18442094128 is a wasteful number, since it uses less digits than its factorization.

18442094128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71052 (or 71046 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 18442094128 in words is "eighteen billion, four hundred forty-two million, ninety-four thousand, one hundred twenty-eight".