36268781 has 2 divisors, whose sum is σ = 36268782. Its totient is φ = 36268780.

The previous prime is 36268751. The next prime is 36268783. The reversal of 36268781 is 18786263.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24255625 + 12013156 = 4925^2 + 3466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36268781 is a prime.

It is a super-2 number, since 2×36268781² = 2630848950451922, which contains 22 as substring.

Together with 36268783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36268783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18134390 + 18134391.

It is an arithmetic number, because the mean of its divisors is an integer number (18134391).

Almost surely, 2^36268781 is an apocalyptic number.

It is an amenable number.

36268781 is a deficient number, since it is larger than the sum of its proper divisors (1).

36268781 is an equidigital number, since it uses as much as digits as its factorization.

36268781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 36268781 is about 6022.3567645898. The cubic root of 36268781 is about 331.0124431329.

The spelling of 36268781 in words is "thirty-six million, two hundred sixty-eight thousand, seven hundred eighty-one".