1145251513 has 16 divisors (see below), whose sum is σ = 1343333376. Its totient is φ = 956123280.

The previous prime is 1145251493. The next prime is 1145251517. The reversal of 1145251513 is 3151525411.

It is not a de Polignac number, because 1145251513 - 2⁹ = 1145251001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145251517) 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 15 ways as a sum of consecutive naturals, for example, 27370 + ... + 55132.

It is an arithmetic number, because the mean of its divisors is an integer number (83958336).

Almost surely, 2^1145251513 is an apocalyptic number.

It is an amenable number.

1145251513 is a deficient number, since it is larger than the sum of its proper divisors (198081863).

1145251513 is an equidigital number, since it uses as much as digits as its factorization.

1145251513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27924.

The product of its digits is 3000, while the sum is 28.

The square root of 1145251513 is about 33841.5648722100. The cubic root of 1145251513 is about 1046.2455522013.

Adding to 1145251513 its reverse (3151525411), we get a palindrome (4296776924).

The spelling of 1145251513 in words is "one billion, one hundred forty-five million, two hundred fifty-one thousand, five hundred thirteen".