18800322146 has 16 divisors (see below), whose sum is σ = 28445050368. Its totient is φ = 9318975600.

The previous prime is 18800322143. The next prime is 18800322157. The reversal of 18800322146 is 64122300881.

It is a super-2 number, since 2×18800322146² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18800322143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27941 + ... + 195911.

It is an arithmetic number, because the mean of its divisors is an integer number (1777815648).

Almost surely, 2^18800322146 is an apocalyptic number.

18800322146 is a deficient number, since it is larger than the sum of its proper divisors (9644728222).

18800322146 is a wasteful number, since it uses less digits than its factorization.

18800322146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168457.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 18800322146 in words is "eighteen billion, eight hundred million, three hundred twenty-two thousand, one hundred forty-six".