1161830 has 16 divisors (see below), whose sum is σ = 2104704. Its totient is φ = 461760.

The previous prime is 1161829. The next prime is 1161833. The reversal of 1161830 is 381611.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161833) 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, 1970 + ... + 2490.

It is an arithmetic number, because the mean of its divisors is an integer number (131544).

2^1161830 is an apocalyptic number.

1161830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161830 is a deficient number, since it is larger than the sum of its proper divisors (942874).

1161830 is a wasteful number, since it uses less digits than its factorization.

1161830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1161830 is about 1077.8821828011. The cubic root of 1161830 is about 105.1269816715.

It can be divided in two parts, 1161 and 830, that added together give a palindrome (1991).

The spelling of 1161830 in words is "one million, one hundred sixty-one thousand, eight hundred thirty".