18181486149 has 8 divisors (see below), whose sum is σ = 24477340992. Its totient is φ = 12003311040.

The previous prime is 18181486139. The next prime is 18181486151. The reversal of 18181486149 is 94168418181.

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

It is not a de Polignac number, because 18181486149 - 2⁸ = 18181485893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18181486109) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29419572 + ... + 29420189.

It is an arithmetic number, because the mean of its divisors is an integer number (3059667624).

Almost surely, 2^18181486149 is an apocalyptic number.

It is an amenable number.

18181486149 is a deficient number, since it is larger than the sum of its proper divisors (6295854843).

18181486149 is a wasteful number, since it uses less digits than its factorization.

18181486149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58839867.

The product of its digits is 442368, while the sum is 51.

The spelling of 18181486149 in words is "eighteen billion, one hundred eighty-one million, four hundred eighty-six thousand, one hundred forty-nine".