36381812 has 6 divisors (see below), whose sum is σ = 63668178. Its totient is φ = 18190904.

The previous prime is 36381809. The next prime is 36381823. The reversal of 36381812 is 21818363.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28686736 + 7695076 = 5356^2 + 2774^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 4547723 + ... + 4547730.

It is an arithmetic number, because the mean of its divisors is an integer number (10611363).

Almost surely, 2^36381812 is an apocalyptic number.

It is an amenable number.

36381812 is a deficient number, since it is larger than the sum of its proper divisors (27286366).

36381812 is a wasteful number, since it uses less digits than its factorization.

36381812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095457 (or 9095455 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 36381812 is about 6031.7337474395. The cubic root of 36381812 is about 331.3559512980.

The spelling of 36381812 in words is "thirty-six million, three hundred eighty-one thousand, eight hundred twelve".