18322580380 has 48 divisors (see below), whose sum is σ = 42773923584. Its totient is φ = 6547023360.

The previous prime is 18322580279. The next prime is 18322580407. The reversal of 18322580380 is 8308522381.

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, 1128577 + ... + 1144696.

It is an arithmetic number, because the mean of its divisors is an integer number (891123408).

Almost surely, 2^18322580380 is an apocalyptic number.

18322580380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18322580380 is an abundant number, since it is smaller than the sum of its proper divisors (24451343204).

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

18322580380 is a wasteful number, since it uses less digits than its factorization.

18322580380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273326 (or 2273324 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 18322580380 in words is "eighteen billion, three hundred twenty-two million, five hundred eighty thousand, three hundred eighty".