1161158592 has 168 divisors, whose sum is σ = 3409549696. Its totient is φ = 348480000.

The previous prime is 1161158573. The next prime is 1161158617. The reversal of 1161158592 is 2958511611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161158592.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3507867 + ... + 3508197.

Almost surely, 2^1161158592 is an apocalyptic number.

1161158592 is a gapful number since it is divisible by the number (12) 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 1161158592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704774848).

1161158592 is an abundant number, since it is smaller than the sum of its proper divisors (2248391104).

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

1161158592 is a wasteful number, since it uses less digits than its factorization.

1161158592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 498 counting only the distinct ones).

The product of its digits is 21600, while the sum is 39.

The square root of 1161158592 is about 34075.7772031688. Note that the first 3 decimals coincide. The cubic root of 1161158592 is about 1051.0672721736.

The spelling of 1161158592 in words is "one billion, one hundred sixty-one million, one hundred fifty-eight thousand, five hundred ninety-two".