1146311555 has 4 divisors (see below), whose sum is σ = 1375573872. Its totient is φ = 917049240.

The previous prime is 1146311549. The next prime is 1146311563. The reversal of 1146311555 is 5551136411.

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

It is not a de Polignac number, because 1146311555 - 2⁴ = 1146311539 is a prime.

It is a super-2 number, since 2×1146311555² = 2628060362253036050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114631151 + ... + 114631160.

It is an arithmetic number, because the mean of its divisors is an integer number (343893468).

Almost surely, 2^1146311555 is an apocalyptic number.

1146311555 is a deficient number, since it is larger than the sum of its proper divisors (229262317).

1146311555 is an equidigital number, since it uses as much as digits as its factorization.

1146311555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229262316.

The product of its digits is 9000, while the sum is 32.

The square root of 1146311555 is about 33857.2230845945. The cubic root of 1146311555 is about 1046.5682534328.

Adding to 1146311555 its reverse (5551136411), we get a palindrome (6697447966).

The spelling of 1146311555 in words is "one billion, one hundred forty-six million, three hundred eleven thousand, five hundred fifty-five".