18078338196 has 72 divisors (see below), whose sum is σ = 48712227200. Its totient is φ = 5636666880.

The previous prime is 18078338183. The next prime is 18078338227. The reversal of 18078338196 is 69183387081.

18078338196 is a `hidden beast` number, since 180 + 7 + 83 + 381 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113245 + ... + 221316.

Almost surely, 2^18078338196 is an apocalyptic number.

It is an amenable number.

18078338196 is an abundant number, since it is smaller than the sum of its proper divisors (30633889004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18078338196 is a wasteful number, since it uses less digits than its factorization.

18078338196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334669 (or 334664 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 18078338196 in words is "eighteen billion, seventy-eight million, three hundred thirty-eight thousand, one hundred ninety-six".