1161819 has 12 divisors (see below), whose sum is σ = 1690416. Its totient is φ = 768912.

The previous prime is 1161791. The next prime is 1161829. The reversal of 1161819 is 9181611.

It is not a de Polignac number, because 1161819 - 2⁷ = 1161691 is a prime.

It is a super-2 number, since 2×1161819² = 2699646777522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1161792 and 1161801.

It is not an unprimeable number, because it can be changed into a prime (1161829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1117 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (140868).

2^1161819 is an apocalyptic number.

1161819 is a deficient number, since it is larger than the sum of its proper divisors (528597).

1161819 is a wasteful number, since it uses less digits than its factorization.

1161819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 943 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The square root of 1161819 is about 1077.8770801905. The cubic root of 1161819 is about 105.1266498959.

The spelling of 1161819 in words is "one million, one hundred sixty-one thousand, eight hundred nineteen".