1161330141 has 12 divisors (see below), whose sum is σ = 1634227872. Its totient is φ = 733470984.

The previous prime is 1161330113. The next prime is 1161330151. The reversal of 1161330141 is 1410331611.

It is not a de Polignac number, because 1161330141 - 2⁵ = 1161330109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161330101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 535081 + ... + 537246.

It is an arithmetic number, because the mean of its divisors is an integer number (136185656).

Almost surely, 2^1161330141 is an apocalyptic number.

It is an amenable number.

1161330141 is a deficient number, since it is larger than the sum of its proper divisors (472897731).

1161330141 is a wasteful number, since it uses less digits than its factorization.

1161330141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072368 (or 1072349 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1161330141 is about 34078.2942794970. The cubic root of 1161330141 is about 1051.1190310122.

Adding to 1161330141 its reverse (1410331611), we get a palindrome (2571661752).

The spelling of 1161330141 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, one hundred forty-one".