1161015606 has 28 divisors (see below), whose sum is σ = 2611093932. Its totient is φ = 387004716.

The previous prime is 1161015593. The next prime is 1161015607. The reversal of 1161015606 is 6065101611.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161015606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161015607) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 396696 + ... + 399611.

Almost surely, 2^1161015606 is an apocalyptic number.

1161015606 is an abundant number, since it is smaller than the sum of its proper divisors (1450078326).

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

1161015606 is an frugal number, since it uses more digits than its factorization.

1161015606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796327 (or 796312 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1161015606 is about 34073.6790793128. The cubic root of 1161015606 is about 1051.0241273137.

The spelling of 1161015606 in words is "one billion, one hundred sixty-one million, fifteen thousand, six hundred six".