1155444141 has 16 divisors (see below), whose sum is σ = 1582240320. Its totient is φ = 749731200.

The previous prime is 1155444139. The next prime is 1155444161. The reversal of 1155444141 is 1414445511.

It is not a de Polignac number, because 1155444141 - 2¹ = 1155444139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155444099 and 1155444108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155444161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14440 + ... + 50193.

It is an arithmetic number, because the mean of its divisors is an integer number (98890020).

Almost surely, 2^1155444141 is an apocalyptic number.

It is an amenable number.

1155444141 is a deficient number, since it is larger than the sum of its proper divisors (426796179).

1155444141 is a wasteful number, since it uses less digits than its factorization.

1155444141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64796.

The product of its digits is 6400, while the sum is 30.

The square root of 1155444141 is about 33991.8246200465. The cubic root of 1155444141 is about 1049.3402177029.

Adding to 1155444141 its reverse (1414445511), we get a palindrome (2569889652).

The spelling of 1155444141 in words is "one billion, one hundred fifty-five million, four hundred forty-four thousand, one hundred forty-one".