1161104868 has 180 divisors, whose sum is σ = 3813912256. Its totient is φ = 301514400.

The previous prime is 1161104851. The next prime is 1161104869. The reversal of 1161104868 is 8684011611.

1161104868 is a `hidden beast` number, since 1 + 161 + 10 + 486 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1161104869) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 272313 + ... + 276543.

Almost surely, 2^1161104868 is an apocalyptic number.

1161104868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161104868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906956128).

1161104868 is an abundant number, since it is smaller than the sum of its proper divisors (2652807388).

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

1161104868 is a wasteful number, since it uses less digits than its factorization.

1161104868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276 (or 4254 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1161104868 is about 34074.9888921479. The cubic root of 1161104868 is about 1051.0510618100.

The spelling of 1161104868 in words is "one billion, one hundred sixty-one million, one hundred four thousand, eight hundred sixty-eight".