1161993 has 8 divisors (see below), whose sum is σ = 1770688. Its totient is φ = 663984.

The previous prime is 1161991. The next prime is 1161997. The reversal of 1161993 is 3991611.

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

It is not a de Polignac number, because 1161993 - 2¹ = 1161991 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1161993.

It is not an unprimeable number, because it can be changed into a prime (1161991) 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, 27646 + ... + 27687.

It is an arithmetic number, because the mean of its divisors is an integer number (221336).

2^1161993 is an apocalyptic number.

It is an amenable number.

1161993 is a deficient number, since it is larger than the sum of its proper divisors (608695).

1161993 is an equidigital number, since it uses as much as digits as its factorization.

1161993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55343.

The product of its digits is 1458, while the sum is 30.

The square root of 1161993 is about 1077.9577913815. The cubic root of 1161993 is about 105.1318977368.

The spelling of 1161993 in words is "one million, one hundred sixty-one thousand, nine hundred ninety-three".