36290981 has 2 divisors, whose sum is σ = 36290982. Its totient is φ = 36290980.

The previous prime is 36290963. The next prime is 36290983. The reversal of 36290981 is 18909263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35880100 + 410881 = 5990^2 + 641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36290981 is a prime.

It is a super-2 number, since 2×36290981² = 2634070603884722, which contains 22 as substring.

Together with 36290983, 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 (36290983) 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 as a sum of consecutive naturals, namely, 18145490 + 18145491.

It is an arithmetic number, because the mean of its divisors is an integer number (18145491).

Almost surely, 2^36290981 is an apocalyptic number.

It is an amenable number.

36290981 is a deficient number, since it is larger than the sum of its proper divisors (1).

36290981 is an equidigital number, since it uses as much as digits as its factorization.

36290981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 36290981 is about 6024.1996148866. The cubic root of 36290981 is about 331.0799665623.

The spelling of 36290981 in words is "thirty-six million, two hundred ninety thousand, nine hundred eighty-one".