1155911041 has 8 divisors (see below), whose sum is σ = 1164219840. Its totient is φ = 1147619088.

The previous prime is 1155911017. The next prime is 1155911047. The reversal of 1155911041 is 1401195511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155911041 - 2²³ = 1147522433 is a prime.

It is a super-3 number, since 3×1155911041³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155911047) 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, 154495 + ... + 161803.

It is an arithmetic number, because the mean of its divisors is an integer number (145527480).

Almost surely, 2^1155911041 is an apocalyptic number.

It is an amenable number.

1155911041 is a deficient number, since it is larger than the sum of its proper divisors (8308799).

1155911041 is an equidigital number, since it uses as much as digits as its factorization.

1155911041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423.

The product of its (nonzero) digits is 900, while the sum is 28.

The square root of 1155911041 is about 33998.6917542425. The cubic root of 1155911041 is about 1049.4815402624.

The spelling of 1155911041 in words is "one billion, one hundred fifty-five million, nine hundred eleven thousand, forty-one".