1158009 has 8 divisors (see below), whose sum is σ = 1555680. Its totient is φ = 766176.

The previous prime is 1158007. The next prime is 1158011. The reversal of 1158009 is 9008511.

It is an interprime number because it is at equal distance from previous prime (1158007) and next prime (1158011).

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

It is not a de Polignac number, because 1158009 - 2¹ = 1158007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1158009.

It is not an unprimeable number, because it can be changed into a prime (1158007) 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, 972 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (194460).

2^1158009 is an apocalyptic number.

It is an amenable number.

1158009 is a deficient number, since it is larger than the sum of its proper divisors (397671).

1158009 is a wasteful number, since it uses less digits than its factorization.

1158009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1158009 is about 1076.1082659287. The cubic root of 1158009 is about 105.0116086938.

The spelling of 1158009 in words is "one million, one hundred fifty-eight thousand, nine".