1165628589 has 8 divisors (see below), whose sum is σ = 1559138112. Its totient is φ = 774602400.

The previous prime is 1165628543. The next prime is 1165628591. The reversal of 1165628589 is 9858265611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1165628589 - 2¹³ = 1165620397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165628539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619737 + ... + 621614.

It is an arithmetic number, because the mean of its divisors is an integer number (194892264).

Almost surely, 2^1165628589 is an apocalyptic number.

It is an amenable number.

1165628589 is a deficient number, since it is larger than the sum of its proper divisors (393509523).

1165628589 is a wasteful number, since it uses less digits than its factorization.

1165628589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241667.

The product of its digits is 1036800, while the sum is 51.

The square root of 1165628589 is about 34141.3032703791. The cubic root of 1165628589 is about 1052.4142749655.

The spelling of 1165628589 in words is "one billion, one hundred sixty-five million, six hundred twenty-eight thousand, five hundred eighty-nine".