18342884378 has 32 divisors (see below), whose sum is σ = 33885323136. Its totient is φ = 7251910848.

The previous prime is 18342884369. The next prime is 18342884437. The reversal of 18342884378 is 87348824381.

It is a super-2 number, since 2×18342884378² (a number of 21 digits) contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 262325 + ... + 324807.

It is an arithmetic number, because the mean of its divisors is an integer number (1058916348).

Almost surely, 2^18342884378 is an apocalyptic number.

18342884378 is a deficient number, since it is larger than the sum of its proper divisors (15542438758).

18342884378 is a wasteful number, since it uses less digits than its factorization.

18342884378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64118.

The product of its digits is 8257536, while the sum is 56.

The spelling of 18342884378 in words is "eighteen billion, three hundred forty-two million, eight hundred eighty-four thousand, three hundred seventy-eight".