201418636 has 12 divisors (see below), whose sum is σ = 367808112. Its totient is φ = 96330608.

The previous prime is 201418631. The next prime is 201418643. The reversal of 201418636 is 636814102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201418598 and 201418607.

It is not an unprimeable number, because it can be changed into a prime (201418631) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1094575 + ... + 1094758.

It is an arithmetic number, because the mean of its divisors is an integer number (30650676).

Almost surely, 2^201418636 is an apocalyptic number.

It is an amenable number.

201418636 is a deficient number, since it is larger than the sum of its proper divisors (166389476).

201418636 is a wasteful number, since it uses less digits than its factorization.

201418636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189360 (or 2189358 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 201418636 is about 14192.2033525454. The cubic root of 201418636 is about 586.1829968144.

The spelling of 201418636 in words is "two hundred one million, four hundred eighteen thousand, six hundred thirty-six".