1155171199 has 64 divisors (see below), whose sum is σ = 1562851584. Its totient is φ = 828112896.

The previous prime is 1155171169. The next prime is 1155171211. The reversal of 1155171199 is 9911715511.

It is not a de Polignac number, because 1155171199 - 2²³ = 1146782591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155171109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5985247 + ... + 5985439.

It is an arithmetic number, because the mean of its divisors is an integer number (24419556).

Almost surely, 2^1155171199 is an apocalyptic number.

1155171199 is a deficient number, since it is larger than the sum of its proper divisors (407680385).

1155171199 is a wasteful number, since it uses less digits than its factorization.

1155171199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its digits is 14175, while the sum is 40.

The square root of 1155171199 is about 33987.8095646071. The cubic root of 1155171199 is about 1049.2575852436.

The spelling of 1155171199 in words is "one billion, one hundred fifty-five million, one hundred seventy-one thousand, one hundred ninety-nine".