18067271800 has 48 divisors (see below), whose sum is σ = 42030568800. Its totient is φ = 7222752000.

The previous prime is 18067271777. The next prime is 18067271801. The reversal of 18067271800 is 817276081.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18067271801) 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, 335121 + ... + 385279.

It is an arithmetic number, because the mean of its divisors is an integer number (875636850).

Almost surely, 2^18067271800 is an apocalyptic number.

18067271800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18067271800 is an abundant number, since it is smaller than the sum of its proper divisors (23963297000).

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

18067271800 is a wasteful number, since it uses less digits than its factorization.

18067271800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51976 (or 51967 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 18067271800 in words is "eighteen billion, sixty-seven million, two hundred seventy-one thousand, eight hundred".