36218491 has 4 divisors (see below), whose sum is σ = 37793232. Its totient is φ = 34643752.

The previous prime is 36218489. The next prime is 36218521. The reversal of 36218491 is 19481263.

36218491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 36218491 - 2¹ = 36218489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36218471) 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 in 3 ways as a sum of consecutive naturals, for example, 787336 + ... + 787381.

It is an arithmetic number, because the mean of its divisors is an integer number (9448308).

Almost surely, 2^36218491 is an apocalyptic number.

36218491 is a deficient number, since it is larger than the sum of its proper divisors (1574741).

36218491 is a wasteful number, since it uses less digits than its factorization.

36218491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574740.

The product of its digits is 10368, while the sum is 34.

The square root of 36218491 is about 6018.1800405106. The cubic root of 36218491 is about 330.8593793017.

The spelling of 36218491 in words is "thirty-six million, two hundred eighteen thousand, four hundred ninety-one".