26181018 has 24 divisors (see below), whose sum is σ = 57291156. Its totient is φ = 8640000.

The previous prime is 26181013. The next prime is 26181047. The reversal of 26181018 is 81018162.

It can be written as a sum of positive squares in 2 ways, for example, as 15896169 + 10284849 = 3987^2 + 3207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26180982 and 26181000.

It is not an unprimeable number, because it can be changed into a prime (26181013) 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, 5383 + ... + 9018.

Almost surely, 2^26181018 is an apocalyptic number.

26181018 is an abundant number, since it is smaller than the sum of its proper divisors (31110138).

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

26181018 is a wasteful number, since it uses less digits than its factorization.

26181018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14510 (or 14507 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 26181018 is about 5116.7390005745. The cubic root of 26181018 is about 296.9355368036.

The spelling of 26181018 in words is "twenty-six million, one hundred eighty-one thousand, eighteen".