18526918040 has 64 divisors (see below), whose sum is σ = 42903302400. Its totient is φ = 7197311872.

The previous prime is 18526917953. The next prime is 18526918049. The reversal of 18526918040 is 4081962581.

It is a junction number, because it is equal to n+sod(n) for n = 18526917982 and 18526918000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18526918049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148589 + ... + 243171.

It is an arithmetic number, because the mean of its divisors is an integer number (670364100).

Almost surely, 2^18526918040 is an apocalyptic number.

18526918040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18526918040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21451651200).

18526918040 is an abundant number, since it is smaller than the sum of its proper divisors (24376384360).

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

18526918040 is a wasteful number, since it uses less digits than its factorization.

18526918040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94736 (or 94732 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 18526918040 in words is "eighteen billion, five hundred twenty-six million, nine hundred eighteen thousand, forty".