18946829180 has 24 divisors (see below), whose sum is σ = 39799982880. Its totient is φ = 7576514240.

The previous prime is 18946829159. The next prime is 18946829183. The reversal of 18946829180 is 8192864981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18946829183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67640 + ... + 206079.

It is an arithmetic number, because the mean of its divisors is an integer number (1658332620).

Almost surely, 2^18946829180 is an apocalyptic number.

18946829180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18946829180 is an abundant number, since it is smaller than the sum of its proper divisors (20853153700).

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

18946829180 is a wasteful number, since it uses less digits than its factorization.

18946829180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277189 (or 277187 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 18946829180 in words is "eighteen billion, nine hundred forty-six million, eight hundred twenty-nine thousand, one hundred eighty".