18161282994 has 8 divisors (see below), whose sum is σ = 36322566000. Its totient is φ = 6053760996.

The previous prime is 18161282989. The next prime is 18161283137. The reversal of 18161282994 is 49928216181.

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

18161282994 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513440244 + ... + 1513440255.

It is an arithmetic number, because the mean of its divisors is an integer number (4540320750).

Almost surely, 2^18161282994 is an apocalyptic number.

18161282994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18161282994 is a wasteful number, since it uses less digits than its factorization.

18161282994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026880504.

The product of its digits is 497664, while the sum is 51.

The spelling of 18161282994 in words is "eighteen billion, one hundred sixty-one million, two hundred eighty-two thousand, nine hundred ninety-four".