1180389 has 8 divisors (see below), whose sum is σ = 1798720. Its totient is φ = 674496.

The previous prime is 1180381. The next prime is 1180391. The reversal of 1180389 is 9830811.

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

It is not a de Polignac number, because 1180389 - 2³ = 1180381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180381) 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, 28084 + ... + 28125.

It is an arithmetic number, because the mean of its divisors is an integer number (224840).

2^1180389 is an apocalyptic number.

It is an amenable number.

1180389 is a deficient number, since it is larger than the sum of its proper divisors (618331).

1180389 is an equidigital number, since it uses as much as digits as its factorization.

1180389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56219.

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

The square root of 1180389 is about 1086.4570861290. The cubic root of 1180389 is about 105.6837912496.

The spelling of 1180389 in words is "one million, one hundred eighty thousand, three hundred eighty-nine".