1165111052 has 24 divisors (see below), whose sum is σ = 2331280896. Its totient is φ = 499106448.

The previous prime is 1165111043. The next prime is 1165111091. The reversal of 1165111052 is 2501115611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63023 + ... + 79385.

It is an arithmetic number, because the mean of its divisors is an integer number (97136704).

Almost surely, 2^1165111052 is an apocalyptic number.

It is an amenable number.

1165111052 is an abundant number, since it is smaller than the sum of its proper divisors (1166169844).

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

1165111052 is a wasteful number, since it uses less digits than its factorization.

1165111052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18917 (or 18915 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 23.

The square root of 1165111052 is about 34133.7230902227. The cubic root of 1165111052 is about 1052.2584952253.

Adding to 1165111052 its reverse (2501115611), we get a palindrome (3666226663).

The spelling of 1165111052 in words is "one billion, one hundred sixty-five million, one hundred eleven thousand, fifty-two".