1161995 has 8 divisors (see below), whose sum is σ = 1400784. Its totient is φ = 925344.

The previous prime is 1161991. The next prime is 1161997. The reversal of 1161995 is 5991611.

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 1161995 - 2² = 1161991 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1161991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (175098).

2^1161995 is an apocalyptic number.

1161995 is a deficient number, since it is larger than the sum of its proper divisors (238789).

1161995 is an equidigital number, since it uses as much as digits as its factorization.

1161995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its digits is 2430, while the sum is 32.

The square root of 1161995 is about 1077.9587190612. The cubic root of 1161995 is about 105.1319580538.

The spelling of 1161995 in words is "one million, one hundred sixty-one thousand, nine hundred ninety-five".