36561418 has 4 divisors (see below), whose sum is σ = 54842130. Its totient is φ = 18280708.

The previous prime is 36561403. The next prime is 36561433. The reversal of 36561418 is 81416563.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (36561403) and next prime (36561433).

It can be written as a sum of positive squares in only one way, i.e., 25979409 + 10582009 = 5097^2 + 3253^2 .

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

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, 9140353 + ... + 9140356.

Almost surely, 2^36561418 is an apocalyptic number.

36561418 is a deficient number, since it is larger than the sum of its proper divisors (18280712).

36561418 is a wasteful number, since it uses less digits than its factorization.

36561418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18280711.

The product of its digits is 17280, while the sum is 34.

The square root of 36561418 is about 6046.6038401734. The cubic root of 36561418 is about 331.9003245074.

The spelling of 36561418 in words is "thirty-six million, five hundred sixty-one thousand, four hundred eighteen".