1145134471 has 8 divisors (see below), whose sum is σ = 1236720240. Its totient is φ = 1054048512.

The previous prime is 1145134411. The next prime is 1145134493. The reversal of 1145134471 is 1744315411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145134471 - 2¹¹ = 1145132423 is a prime.

It is a super-3 number, since 3×1145134471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145134411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 120181 + ... + 129358.

It is an arithmetic number, because the mean of its divisors is an integer number (154590030).

Almost surely, 2^1145134471 is an apocalyptic number.

1145134471 is a deficient number, since it is larger than the sum of its proper divisors (91585769).

1145134471 is a wasteful number, since it uses less digits than its factorization.

1145134471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249905.

The product of its digits is 6720, while the sum is 31.

The square root of 1145134471 is about 33839.8355640213. The cubic root of 1145134471 is about 1046.2099097122.

Adding to 1145134471 its reverse (1744315411), we get a palindrome (2889449882).

The spelling of 1145134471 in words is "one billion, one hundred forty-five million, one hundred thirty-four thousand, four hundred seventy-one".