1089138 has 8 divisors (see below), whose sum is σ = 2178288. Its totient is φ = 363044.

The previous prime is 1089133. The next prime is 1089161. The reversal of 1089138 is 8319801.

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

1089138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1089133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90756 + ... + 90767.

It is an arithmetic number, because the mean of its divisors is an integer number (272286).

2^1089138 is an apocalyptic number.

1089138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1089138 is a wasteful number, since it uses less digits than its factorization.

1089138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181528.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1089138 is about 1043.6177461121. The cubic root of 1089138 is about 102.8871104259.

The spelling of 1089138 in words is "one million, eighty-nine thousand, one hundred thirty-eight".