1155412115 has 32 divisors (see below), whose sum is σ = 1632076992. Its totient is φ = 774144000.

The previous prime is 1155412087. The next prime is 1155412121. The reversal of 1155412115 is 5112145511.

It is a happy number.

It is not a de Polignac number, because 1155412115 - 2¹⁶ = 1155346579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457055 + ... + 459575.

It is an arithmetic number, because the mean of its divisors is an integer number (51002406).

Almost surely, 2^1155412115 is an apocalyptic number.

1155412115 is a deficient number, since it is larger than the sum of its proper divisors (476664877).

1155412115 is a wasteful number, since it uses less digits than its factorization.

1155412115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191.

The product of its digits is 1000, while the sum is 26.

The square root of 1155412115 is about 33991.3535329207. The cubic root of 1155412115 is about 1049.3305225911.

Adding to 1155412115 its reverse (5112145511), we get a palindrome (6267557626).

The spelling of 1155412115 in words is "one billion, one hundred fifty-five million, four hundred twelve thousand, one hundred fifteen".