1145313515 has 4 divisors (see below), whose sum is σ = 1374376224. Its totient is φ = 916250808.

The previous prime is 1145313509. The next prime is 1145313527. The reversal of 1145313515 is 5153135411.

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 1145313515 - 2¹² = 1145309419 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, 114531347 + ... + 114531356.

It is an arithmetic number, because the mean of its divisors is an integer number (343594056).

Almost surely, 2^1145313515 is an apocalyptic number.

1145313515 is a deficient number, since it is larger than the sum of its proper divisors (229062709).

1145313515 is an equidigital number, since it uses as much as digits as its factorization.

1145313515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229062708.

The product of its digits is 4500, while the sum is 29.

The square root of 1145313515 is about 33842.4809226510. The cubic root of 1145313515 is about 1046.2644325216.

Adding to 1145313515 its reverse (5153135411), we get a palindrome (6298448926).

The spelling of 1145313515 in words is "one billion, one hundred forty-five million, three hundred thirteen thousand, five hundred fifteen".