1181860 has 12 divisors (see below), whose sum is σ = 2481948. Its totient is φ = 472736.

The previous prime is 1181839. The next prime is 1181879. The reversal of 1181860 is 681811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 850084 + 331776 = 922^2 + 576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29527 + ... + 29566.

It is an arithmetic number, because the mean of its divisors is an integer number (206829).

2^1181860 is an apocalyptic number.

1181860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181860 is an abundant number, since it is smaller than the sum of its proper divisors (1300088).

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

1181860 is a wasteful number, since it uses less digits than its factorization.

1181860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59102 (or 59100 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 1181860 is about 1087.1338464053. The cubic root of 1181860 is about 105.7276740496.

The spelling of 1181860 in words is "one million, one hundred eighty-one thousand, eight hundred sixty".