201191589 has 36 divisors (see below), whose sum is σ = 317044000. Its totient is φ = 122599008.

The previous prime is 201191567. The next prime is 201191611. The reversal of 201191589 is 985191102.

It is an interprime number because it is at equal distance from previous prime (201191567) and next prime (201191611).

It is not a de Polignac number, because 201191589 - 2¹⁹ = 200667301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201191489) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 143112 + ... + 144510.

Almost surely, 2^201191589 is an apocalyptic number.

201191589 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

201191589 is a deficient number, since it is larger than the sum of its proper divisors (115852411).

201191589 is a wasteful number, since it uses less digits than its factorization.

201191589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 201191589 is about 14184.2020924689. The cubic root of 201191589 is about 585.9626578339.

The spelling of 201191589 in words is "two hundred one million, one hundred ninety-one thousand, five hundred eighty-nine".