18404133000138 has 24 divisors (see below), whose sum is σ = 40241452894500. Its totient is φ = 6078429247104.

The previous prime is 18404133000133. The next prime is 18404133000233. The reversal of 18404133000138 is 83100033140481.

It is a happy number.

18404133000138 is a `hidden beast` number, since 1 + 84 + 0 + 413 + 30 + 0 + 0 + 138 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18049301911809 + 354831088329 = 4248447^2 + 595677^2 .

It is a super-2 number, since 2×18404133000138² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18404133000133) 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, 4690144063 + ... + 4690147986.

Almost surely, 2^{18404133000138} is an apocalyptic number.

18404133000138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18404133000138 is an abundant number, since it is smaller than the sum of its proper divisors (21837319894362).

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

18404133000138 is a wasteful number, since it uses less digits than its factorization.

18404133000138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380292166 (or 9380292163 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 18404133000138 in words is "eighteen trillion, four hundred four billion, one hundred thirty-three million, one hundred thirty-eight", and thus it is an aban number.