36036981 has 10 divisors (see below), whose sum is σ = 53833142. Its totient is φ = 24024600.

The previous prime is 36036947. The next prime is 36036997. The reversal of 36036981 is 18963063.

It is a happy number.

36036981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 34751025 + 1285956 = 5895^2 + 1134^2 .

It is not a de Polignac number, because 36036981 - 2¹⁰ = 36035957 is a prime.

It is a super-2 number, since 2×36036981² = 2597327999188722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36036941) 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 9 ways as a sum of consecutive naturals, for example, 222370 + ... + 222531.

Almost surely, 2^36036981 is an apocalyptic number.

It is an amenable number.

36036981 is a deficient number, since it is larger than the sum of its proper divisors (17796161).

36036981 is an equidigital number, since it uses as much as digits as its factorization.

36036981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444913 (or 444904 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 36036981 is about 6003.0809589743. The cubic root of 36036981 is about 330.3057496889.

The spelling of 36036981 in words is "thirty-six million, thirty-six thousand, nine hundred eighty-one".