201493487 has 4 divisors (see below), whose sum is σ = 216993000. Its totient is φ = 185993976.

The previous prime is 201493483. The next prime is 201493489. The reversal of 201493487 is 784394102.

201493487 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 201493487 - 2² = 201493483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201493487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201493483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7749737 + ... + 7749762.

It is an arithmetic number, because the mean of its divisors is an integer number (54248250).

Almost surely, 2^201493487 is an apocalyptic number.

201493487 is a deficient number, since it is larger than the sum of its proper divisors (15499513).

201493487 is a wasteful number, since it uses less digits than its factorization.

201493487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15499512.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 201493487 is about 14194.8401540842. The cubic root of 201493487 is about 586.2556000756.

The spelling of 201493487 in words is "two hundred one million, four hundred ninety-three thousand, four hundred eighty-seven".