1161261035 has 8 divisors (see below), whose sum is σ = 1520196336. Its totient is φ = 844553440.

The previous prime is 1161261029. The next prime is 1161261043. The reversal of 1161261035 is 5301621611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1161261035 - 2¹⁰ = 1161260011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161260995 and 1161261013.

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, 10556864 + ... + 10556973.

It is an arithmetic number, because the mean of its divisors is an integer number (190024542).

Almost surely, 2^1161261035 is an apocalyptic number.

1161261035 is a deficient number, since it is larger than the sum of its proper divisors (358935301).

1161261035 is a wasteful number, since it uses less digits than its factorization.

1161261035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21113853.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1161261035 is about 34077.2803345572. The cubic root of 1161261035 is about 1051.0981813359.

Adding to 1161261035 its reverse (5301621611), we get a palindrome (6462882646).

The spelling of 1161261035 in words is "one billion, one hundred sixty-one million, two hundred sixty-one thousand, thirty-five".