36378421 has 2 divisors, whose sum is σ = 36378422. Its totient is φ = 36378420.

The previous prime is 36378403. The next prime is 36378431. The reversal of 36378421 is 12487363.

It is a happy number.

36378421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23136100 + 13242321 = 4810^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 36378421 - 2⁵ = 36378389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36378401) 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 as a sum of consecutive naturals, namely, 18189210 + 18189211.

It is an arithmetic number, because the mean of its divisors is an integer number (18189211).

Almost surely, 2^36378421 is an apocalyptic number.

It is an amenable number.

36378421 is a deficient number, since it is larger than the sum of its proper divisors (1).

36378421 is an equidigital number, since it uses as much as digits as its factorization.

36378421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 36378421 is about 6031.4526442641. The cubic root of 36378421 is about 331.3456562002.

The spelling of 36378421 in words is "thirty-six million, three hundred seventy-eight thousand, four hundred twenty-one".