18800322147 has 12 divisors (see below), whose sum is σ = 27219033504. Its totient is φ = 12504465360.

The previous prime is 18800322143. The next prime is 18800322157. The reversal of 18800322147 is 74122300881.

It is not a de Polignac number, because 18800322147 - 2² = 18800322143 is a prime.

It is a super-2 number, since 2×18800322147² (a number of 21 digits) contains 22 as substring.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2419468 + ... + 2427225.

It is an arithmetic number, because the mean of its divisors is an integer number (2268252792).

Almost surely, 2^18800322147 is an apocalyptic number.

18800322147 is a deficient number, since it is larger than the sum of its proper divisors (8418711357).

18800322147 is a wasteful number, since it uses less digits than its factorization.

18800322147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847130 (or 4847127 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 18800322147 in words is "eighteen billion, eight hundred million, three hundred twenty-two thousand, one hundred forty-seven".