1161135564 has 96 divisors (see below), whose sum is σ = 2946585600. Its totient is φ = 354481152.

The previous prime is 1161135557. The next prime is 1161135571. The reversal of 1161135564 is 4655311611.

It is an interprime number because it is at equal distance from previous prime (1161135557) and next prime (1161135571).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3326862 + ... + 3327210.

It is an arithmetic number, because the mean of its divisors is an integer number (30693600).

Almost surely, 2^1161135564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161135564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473292800).

1161135564 is an abundant number, since it is smaller than the sum of its proper divisors (1785450036).

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

1161135564 is a wasteful number, since it uses less digits than its factorization.

1161135564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 765 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 1161135564 is about 34075.4393075130. The cubic root of 1161135564 is about 1051.0603239016.

The spelling of 1161135564 in words is "one billion, one hundred sixty-one million, one hundred thirty-five thousand, five hundred sixty-four".