1138158 has 32 divisors (see below), whose sum is σ = 2891520. Its totient is φ = 325080.

The previous prime is 1138147. The next prime is 1138171. The reversal of 1138158 is 8518311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (90360).

2^1138158 is an apocalyptic number.

1138158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1138158 is an abundant number, since it is smaller than the sum of its proper divisors (1753362).

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

1138158 is a wasteful number, since it uses less digits than its factorization.

1138158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029 (or 3023 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1138158 is about 1066.8448809457. The cubic root of 1138158 is about 104.4080981960.

It can be divided in two parts, 1138 and 158, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1138158 in words is "one million, one hundred thirty-eight thousand, one hundred fifty-eight".