201987037 has 4 divisors (see below), whose sum is σ = 230842336. Its totient is φ = 173131740.

The previous prime is 201987029. The next prime is 201987061. The reversal of 201987037 is 730789102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201987037 - 2³ = 201987029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201986987 and 201987005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201987007) 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, 14427639 + ... + 14427652.

It is an arithmetic number, because the mean of its divisors is an integer number (57710584).

Almost surely, 2^201987037 is an apocalyptic number.

It is an amenable number.

201987037 is a deficient number, since it is larger than the sum of its proper divisors (28855299).

201987037 is an equidigital number, since it uses as much as digits as its factorization.

201987037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28855298.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 201987037 is about 14212.2143594867. The cubic root of 201987037 is about 586.7338794306.

The spelling of 201987037 in words is "two hundred one million, nine hundred eighty-seven thousand, thirty-seven".