1161151041 has 4 divisors (see below), whose sum is σ = 1548201392. Its totient is φ = 774100692.

The previous prime is 1161151031. The next prime is 1161151091. The reversal of 1161151041 is 1401511611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1161151041 - 2¹⁰ = 1161150017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161150999 and 1161151017.

It is not an unprimeable number, because it can be changed into a prime (1161151001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193525171 + ... + 193525176.

It is an arithmetic number, because the mean of its divisors is an integer number (387050348).

Almost surely, 2^1161151041 is an apocalyptic number.

It is an amenable number.

1161151041 is a deficient number, since it is larger than the sum of its proper divisors (387050351).

1161151041 is an equidigital number, since it uses as much as digits as its factorization.

1161151041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387050350.

The product of its (nonzero) digits is 120, while the sum is 21.

The square root of 1161151041 is about 34075.6664058093. Note that the first 3 decimals coincide. The cubic root of 1161151041 is about 1051.0649938095.

Adding to 1161151041 its reverse (1401511611), we get a palindrome (2562662652).

The spelling of 1161151041 in words is "one billion, one hundred sixty-one million, one hundred fifty-one thousand, forty-one".