18078301838 has 8 divisors (see below), whose sum is σ = 27179225040. Its totient is φ = 9018560160.

The previous prime is 18078301771. The next prime is 18078301841. The reversal of 18078301838 is 83810387081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18078301792 and 18078301801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10294283 + ... + 10296038.

It is an arithmetic number, because the mean of its divisors is an integer number (3397403130).

Almost surely, 2^18078301838 is an apocalyptic number.

18078301838 is a deficient number, since it is larger than the sum of its proper divisors (9100923202).

18078301838 is a wasteful number, since it uses less digits than its factorization.

18078301838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20590762.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 18078301838 in words is "eighteen billion, seventy-eight million, three hundred one thousand, eight hundred thirty-eight".