1145305013 has 4 divisors (see below), whose sum is σ = 1182250368. Its totient is φ = 1108359660.

The previous prime is 1145305001. The next prime is 1145305019. The reversal of 1145305013 is 3105035411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145305013 - 2⁴ = 1145304997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145305013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145305019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18472631 + ... + 18472692.

It is an arithmetic number, because the mean of its divisors is an integer number (295562592).

Almost surely, 2^1145305013 is an apocalyptic number.

It is an amenable number.

1145305013 is a deficient number, since it is larger than the sum of its proper divisors (36945355).

1145305013 is an equidigital number, since it uses as much as digits as its factorization.

1145305013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36945354.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1145305013 is about 33842.3553110595. The cubic root of 1145305013 is about 1046.2618436053.

The spelling of 1145305013 in words is "one billion, one hundred forty-five million, three hundred five thousand, thirteen".