1155487199 has 2 divisors, whose sum is σ = 1155487200. Its totient is φ = 1155487198.

The previous prime is 1155487129. The next prime is 1155487213. The reversal of 1155487199 is 9917845511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155487199 - 2²⁴ = 1138709983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155487129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577743599 + 577743600.

It is an arithmetic number, because the mean of its divisors is an integer number (577743600).

Almost surely, 2^1155487199 is an apocalyptic number.

1155487199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155487199 is an equidigital number, since it uses as much as digits as its factorization.

1155487199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 50.

The square root of 1155487199 is about 33992.4579723209. The cubic root of 1155487199 is about 1049.3532522086.

The spelling of 1155487199 in words is "one billion, one hundred fifty-five million, four hundred eighty-seven thousand, one hundred ninety-nine".