1161204030 has 192 divisors, whose sum is σ = 3566384640. Its totient is φ = 256658688.

The previous prime is 1161204017. The next prime is 1161204047. The reversal of 1161204030 is 304021611.

It is a happy number.

1161204030 is a `hidden beast` number, since 11 + 612 + 0 + 40 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1161203994 and 1161204012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2771161 + ... + 2771579.

It is an arithmetic number, because the mean of its divisors is an integer number (18574920).

Almost surely, 2^1161204030 is an apocalyptic number.

1161204030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161204030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783192320).

1161204030 is an abundant number, since it is smaller than the sum of its proper divisors (2405180610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161204030 is a wasteful number, since it uses less digits than its factorization.

1161204030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1161204030 is about 34076.4439165826. The cubic root of 1161204030 is about 1051.0809819781.

Adding to 1161204030 its reverse (304021611), we get a palindrome (1465225641).

The spelling of 1161204030 in words is "one billion, one hundred sixty-one million, two hundred four thousand, thirty".