1158100 has 36 divisors (see below), whose sum is σ = 2589244. Its totient is φ = 449280.

The previous prime is 1158089. The next prime is 1158121. The reversal of 1158100 is 18511.

It can be written as a sum of positive squares in 6 ways, for example, as 80656 + 1077444 = 284^2 + 1038^2 .

It is a super-2 number, since 2×1158100² = 2682391220000, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3544 + ... + 3856.

2^1158100 is an apocalyptic number.

1158100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294622).

1158100 is an abundant number, since it is smaller than the sum of its proper divisors (1431144).

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

1158100 is a wasteful number, since it uses less digits than its factorization.

1158100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1158100 is about 1076.1505470890. The cubic root of 1158100 is about 105.0143593363.

The spelling of 1158100 in words is "one million, one hundred fifty-eight thousand, one hundred".