36394381 has 2 divisors, whose sum is σ = 36394382. Its totient is φ = 36394380.

The previous prime is 36394373. The next prime is 36394427. The reversal of 36394381 is 18349363.

36394381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 3515625 = 5734^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 36394381 - 2³ = 36394373 is a prime.

It is a super-2 number, since 2×36394381² = 2649101936746322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36394381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36394301) 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, 18197190 + 18197191.

It is an arithmetic number, because the mean of its divisors is an integer number (18197191).

Almost surely, 2^36394381 is an apocalyptic number.

It is an amenable number.

36394381 is a deficient number, since it is larger than the sum of its proper divisors (1).

36394381 is an equidigital number, since it uses as much as digits as its factorization.

36394381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 36394381 is about 6032.7755635362. The cubic root of 36394381 is about 331.3941052840.

The spelling of 36394381 in words is "thirty-six million, three hundred ninety-four thousand, three hundred eighty-one".