18820419068 has 48 divisors (see below), whose sum is σ = 37847174400. Its totient is φ = 8098865280.

The previous prime is 18820419067. The next prime is 18820419073. The reversal of 18820419068 is 86091402881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18820419061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336448 + ... + 1350456.

It is an arithmetic number, because the mean of its divisors is an integer number (788482800).

Almost surely, 2^18820419068 is an apocalyptic number.

It is an amenable number.

18820419068 is an abundant number, since it is smaller than the sum of its proper divisors (19026755332).

18820419068 is a wasteful number, since it uses less digits than its factorization.

18820419068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15650 (or 15648 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The spelling of 18820419068 in words is "eighteen billion, eight hundred twenty million, four hundred nineteen thousand, sixty-eight".