201489193 has 4 divisors (see below), whose sum is σ = 201519760. Its totient is φ = 201458628.

The previous prime is 201489179. The next prime is 201489227. The reversal of 201489193 is 391984102.

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 201489193 - 2⁹ = 201488681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201489103) 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, 855 + ... + 20092.

It is an arithmetic number, because the mean of its divisors is an integer number (50379940).

Almost surely, 2^201489193 is an apocalyptic number.

It is an amenable number.

201489193 is a deficient number, since it is larger than the sum of its proper divisors (30567).

201489193 is an equidigital number, since it uses as much as digits as its factorization.

201489193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30566.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 201489193 is about 14194.6889011348. The cubic root of 201489193 is about 586.2514355085.

The spelling of 201489193 in words is "two hundred one million, four hundred eighty-nine thousand, one hundred ninety-three".