18820543092 has 24 divisors (see below), whose sum is σ = 47292647136. Its totient is φ = 5790936288.

The previous prime is 18820543069. The next prime is 18820543139. The reversal of 18820543092 is 29034502881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60322098 + ... + 60322409.

It is an arithmetic number, because the mean of its divisors is an integer number (1970526964).

Almost surely, 2^18820543092 is an apocalyptic number.

18820543092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18820543092 is an abundant number, since it is smaller than the sum of its proper divisors (28472104044).

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

18820543092 is a wasteful number, since it uses less digits than its factorization.

18820543092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120644527 (or 120644525 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 18820543092 in words is "eighteen billion, eight hundred twenty million, five hundred forty-three thousand, ninety-two".