201118987 has 2 divisors, whose sum is σ = 201118988. Its totient is φ = 201118986.

The previous prime is 201118963. The next prime is 201118991. The reversal of 201118987 is 789811102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201118987 - 2²⁷ = 66901259 is a prime.

It is a super-4 number, since 4×201118987⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (201118937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100559493 + 100559494.

It is an arithmetic number, because the mean of its divisors is an integer number (100559494).

Almost surely, 2^201118987 is an apocalyptic number.

201118987 is a deficient number, since it is larger than the sum of its proper divisors (1).

201118987 is an equidigital number, since it uses as much as digits as its factorization.

201118987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 201118987 is about 14181.6426058479. The cubic root of 201118987 is about 585.8921658560.

The spelling of 201118987 in words is "two hundred one million, one hundred eighteen thousand, nine hundred eighty-seven".