18782018136 has 192 divisors, whose sum is σ = 58778254080. Its totient is φ = 5307275520.

The previous prime is 18782018083. The next prime is 18782018159. The reversal of 18782018136 is 63181028781.

It is a happy number.

It is a super-2 number, since 2×18782018136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18782018091 and 18782018100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20707395 + ... + 20708301.

It is an arithmetic number, because the mean of its divisors is an integer number (306136740).

Almost surely, 2^18782018136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18782018136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29389127040).

18782018136 is an abundant number, since it is smaller than the sum of its proper divisors (39996235944).

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

18782018136 is a wasteful number, since it uses less digits than its factorization.

18782018136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 18782018136 in words is "eighteen billion, seven hundred eighty-two million, eighteen thousand, one hundred thirty-six".