18869218200 has 144 divisors (see below), whose sum is σ = 72421904880. Its totient is φ = 4312961280.

The previous prime is 18869218183. The next prime is 18869218211. The reversal of 18869218200 is 281296881.

It is a happy number.

It is a super-2 number, since 2×18869218200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 736179 + ... + 761378.

It is an arithmetic number, because the mean of its divisors is an integer number (502929895).

Almost surely, 2^18869218200 is an apocalyptic number.

18869218200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18869218200 is an abundant number, since it is smaller than the sum of its proper divisors (53552686680).

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

18869218200 is a wasteful number, since it uses less digits than its factorization.

18869218200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497586 (or 1497574 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 18869218200 in words is "eighteen billion, eight hundred sixty-nine million, two hundred eighteen thousand, two hundred".