1181215 has 8 divisors (see below), whose sum is σ = 1620000. Its totient is φ = 809952.

The previous prime is 1181209. The next prime is 1181237. The reversal of 1181215 is 5121811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1181215 - 2⁵ = 1181183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1181192 and 1181201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16840 + ... + 16909.

It is an arithmetic number, because the mean of its divisors is an integer number (202500).

2^1181215 is an apocalyptic number.

1181215 is a deficient number, since it is larger than the sum of its proper divisors (438785).

1181215 is an equidigital number, since it uses as much as digits as its factorization.

1181215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33761.

The product of its digits is 80, while the sum is 19.

The square root of 1181215 is about 1086.8371543152. The cubic root of 1181215 is about 105.7084369264.

The spelling of 1181215 in words is "one million, one hundred eighty-one thousand, two hundred fifteen".