1158199 has 4 divisors (see below), whose sum is σ = 1323664. Its totient is φ = 992736.

The previous prime is 1158197. The next prime is 1158203. The reversal of 1158199 is 9918511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9918511 = 2633 ⋅3767.

It is a cyclic number.

It is not a de Polignac number, because 1158199 - 2¹ = 1158197 is a prime.

It is a super-5 number, since 5×1158199⁵ (a number of 32 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82722 + ... + 82735.

It is an arithmetic number, because the mean of its divisors is an integer number (330916).

2^1158199 is an apocalyptic number.

1158199 is a deficient number, since it is larger than the sum of its proper divisors (165465).

1158199 is an equidigital number, since it uses as much as digits as its factorization.

1158199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165464.

The product of its digits is 3240, while the sum is 34.

The square root of 1158199 is about 1076.1965433879. The cubic root of 1158199 is about 105.0173516298.

The spelling of 1158199 in words is "one million, one hundred fifty-eight thousand, one hundred ninety-nine".