1155340115 has 4 divisors (see below), whose sum is σ = 1386408144. Its totient is φ = 924272088.

The previous prime is 1155340079. The next prime is 1155340157. The reversal of 1155340115 is 5110435511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155340115 - 2¹⁶ = 1155274579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115534007 + ... + 115534016.

It is an arithmetic number, because the mean of its divisors is an integer number (346602036).

Almost surely, 2^1155340115 is an apocalyptic number.

1155340115 is a deficient number, since it is larger than the sum of its proper divisors (231068029).

1155340115 is an equidigital number, since it uses as much as digits as its factorization.

1155340115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231068028.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1155340115 is about 33990.2944235557. The cubic root of 1155340115 is about 1049.3087256449.

Adding to 1155340115 its reverse (5110435511), we get a palindrome (6265775626).

The spelling of 1155340115 in words is "one billion, one hundred fifty-five million, three hundred forty thousand, one hundred fifteen".