1158198 has 16 divisors (see below), whose sum is σ = 2334960. Its totient is φ = 382976.

The previous prime is 1158197. The next prime is 1158203. The reversal of 1158198 is 8918511.

It is a super-4 number, since 4×1158198⁴ (a number of 25 digits) contains 4444 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 1526.

It is an arithmetic number, because the mean of its divisors is an integer number (145935).

2^1158198 is an apocalyptic number.

1158198 is an abundant number, since it is smaller than the sum of its proper divisors (1176762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158198 is a wasteful number, since it uses less digits than its factorization.

1158198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its digits is 2880, while the sum is 33.

The square root of 1158198 is about 1076.1960787886. The cubic root of 1158198 is about 105.0173214054.

The spelling of 1158198 in words is "one million, one hundred fifty-eight thousand, one hundred ninety-eight".