1155541154 has 24 divisors (see below), whose sum is σ = 1819096860. Its totient is φ = 550116576.

The previous prime is 1155541147. The next prime is 1155541157. The reversal of 1155541154 is 4511455511.

It can be written as a sum of positive squares in 2 ways, for example, as 1129296025 + 26245129 = 33605^2 + 5123^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155541154.

It is not an unprimeable number, because it can be changed into a prime (1155541157) 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, 159932 + ... + 167000.

Almost surely, 2^1155541154 is an apocalyptic number.

1155541154 is a deficient number, since it is larger than the sum of its proper divisors (663555706).

1155541154 is an equidigital number, since it uses as much as digits as its factorization.

1155541154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202 (or 7155 counting only the distinct ones).

The product of its digits is 10000, while the sum is 32.

The square root of 1155541154 is about 33993.2515949857. The cubic root of 1155541154 is about 1049.3695849941.

Adding to 1155541154 its reverse (4511455511), we get a palindrome (5666996665).

The spelling of 1155541154 in words is "one billion, one hundred fifty-five million, five hundred forty-one thousand, one hundred fifty-four".