1161976068 has 108 divisors (see below), whose sum is σ = 3282188364. Its totient is φ = 346262400.

The previous prime is 1161976043. The next prime is 1161976091. The reversal of 1161976068 is 8606791611.

It can be written as a sum of positive squares in 2 ways, for example, as 287709444 + 874266624 = 16962^2 + 29568^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 263530 + ... + 267902.

It is an arithmetic number, because the mean of its divisors is an integer number (30390633).

Almost surely, 2^1161976068 is an apocalyptic number.

1161976068 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 1161976068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641094182).

1161976068 is an abundant number, since it is smaller than the sum of its proper divisors (2120212296).

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

1161976068 is a wasteful number, since it uses less digits than its factorization.

1161976068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466 (or 4450 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1161976068 is about 34087.7700649368. The cubic root of 1161976068 is about 1051.3138709065.

It can be divided in two parts, 116197 and 6068, that added together give a triangular number (122265 = T₄₉₄).

The spelling of 1161976068 in words is "one billion, one hundred sixty-one million, nine hundred seventy-six thousand, sixty-eight".