1391180 has 48 divisors (see below), whose sum is σ = 3521280. Its totient is φ = 451008.

The previous prime is 1391129. The next prime is 1391183. The reversal of 1391180 is 811931.

It is not an unprimeable number, because it can be changed into a prime (1391183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2399 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (73360).

2^1391180 is an apocalyptic number.

1391180 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 1391180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1760640).

1391180 is an abundant number, since it is smaller than the sum of its proper divisors (2130100).

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

1391180 is a wasteful number, since it uses less digits than its factorization.

1391180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1391180 is about 1179.4829375620. The cubic root of 1391180 is about 111.6334744545.

The spelling of 1391180 in words is "one million, three hundred ninety-one thousand, one hundred eighty".