18229041800 has 36 divisors (see below), whose sum is σ = 42386962005. Its totient is φ = 7290852960.

The previous prime is 18229041799. The next prime is 18229041847. The reversal of 18229041800 is 814092281.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 17864460964 + 364580836 = 133658^2 + 19094^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95470.

It is a super-2 number, since 2×18229041800² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1904627 + ... + 1914173.

Almost surely, 2^18229041800 is an apocalyptic number.

18229041800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18229041800 is an abundant number, since it is smaller than the sum of its proper divisors (24157920205).

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

18229041800 is an frugal number, since it uses more digits than its factorization.

18229041800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19110 (or 9554 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 18229041800 in words is "eighteen billion, two hundred twenty-nine million, forty-one thousand, eight hundred".