1161525164 has 24 divisors (see below), whose sum is σ = 2090345040. Its totient is φ = 564325056.

The previous prime is 1161525163. The next prime is 1161525191. The reversal of 1161525164 is 4615251611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161525164.

It is not an unprimeable number, because it can be changed into a prime (1161525161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117959 + ... + 127425.

It is an arithmetic number, because the mean of its divisors is an integer number (87097710).

Almost surely, 2^1161525164 is an apocalyptic number.

It is an amenable number.

1161525164 is a deficient number, since it is larger than the sum of its proper divisors (928819876).

1161525164 is a wasteful number, since it uses less digits than its factorization.

1161525164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337 (or 10335 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 1161525164 is about 34081.1555555266. The cubic root of 1161525164 is about 1051.1778661088.

Adding to 1161525164 its reverse (4615251611), we get a palindrome (5776776775).

The spelling of 1161525164 in words is "one billion, one hundred sixty-one million, five hundred twenty-five thousand, one hundred sixty-four".