18292929192820 has 48 divisors (see below), whose sum is σ = 39138822829008. Its totient is φ = 7180611737600.

The previous prime is 18292929192803. The next prime is 18292929192833. The reversal of 18292929192820 is 2829192929281.

It can be written as a sum of positive squares in 8 ways, for example, as 759665641744 + 17533263551076 = 871588^2 + 4187274^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39842119 + ... + 40298638.

It is an arithmetic number, because the mean of its divisors is an integer number (815392142271).

Almost surely, 2^{18292929192820} is an apocalyptic number.

18292929192820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18292929192820 is an abundant number, since it is smaller than the sum of its proper divisors (20845893636188).

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

18292929192820 is a wasteful number, since it uses less digits than its factorization.

18292929192820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80140980 (or 80140978 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 18292929192820 in words is "eighteen trillion, two hundred ninety-two billion, nine hundred twenty-nine million, one hundred ninety-two thousand, eight hundred twenty".