18520000026 has 64 divisors (see below), whose sum is σ = 40839676416. Its totient is φ = 5552331200.

The previous prime is 18520000007. The next prime is 18520000027. The reversal of 18520000026 is 62000002581.

It is a junction number, because it is equal to n+sod(n) for n = 18519999960 and 18520000005.

It is not an unprimeable number, because it can be changed into a prime (18520000027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2997076 + ... + 3003248.

It is an arithmetic number, because the mean of its divisors is an integer number (638119944).

Almost surely, 2^18520000026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18520000026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20419838208).

18520000026 is an abundant number, since it is smaller than the sum of its proper divisors (22319676390).

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

18520000026 is a wasteful number, since it uses less digits than its factorization.

18520000026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 18520000026 in words is "eighteen billion, five hundred twenty million, twenty-six", and thus it is an aban number.