36818181 has 24 divisors (see below), whose sum is σ = 56420000. Its totient is φ = 23071392.

The previous prime is 36818167. The next prime is 36818231. The reversal of 36818181 is 18181863.

It is not a de Polignac number, because 36818181 - 2⁵ = 36818149 is a prime.

It is a super-2 number, since 2×36818181² = 2711156904297522, which contains 22 as substring.

It is a Duffinian number.

36818181 is a modest number, since divided by 8181 gives 3681 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36818981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22995 + ... + 24543.

Almost surely, 2^36818181 is an apocalyptic number.

It is an amenable number.

36818181 is a deficient number, since it is larger than the sum of its proper divisors (19601819).

36818181 is a wasteful number, since it uses less digits than its factorization.

36818181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1710 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 36818181 is about 6067.7986947492. The cubic root of 36818181 is about 332.6754677149.

The spelling of 36818181 in words is "thirty-six million, eight hundred eighteen thousand, one hundred eighty-one".