18621072886 has 16 divisors (see below), whose sum is σ = 30085876800. Its totient is φ = 8592717888.

The previous prime is 18621072881. The next prime is 18621072889. The reversal of 18621072886 is 68827012681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18621072881) 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, 78610 + ... + 208378.

It is an arithmetic number, because the mean of its divisors is an integer number (1880367300).

Almost surely, 2^18621072886 is an apocalyptic number.

18621072886 is a deficient number, since it is larger than the sum of its proper divisors (11464803914).

18621072886 is a wasteful number, since it uses less digits than its factorization.

18621072886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135303.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 18621072886 in words is "eighteen billion, six hundred twenty-one million, seventy-two thousand, eight hundred eighty-six".