1045666513 has 4 divisors (see below), whose sum is σ = 1047412800. Its totient is φ = 1043920228.

The previous prime is 1045666507. The next prime is 1045666537. The reversal of 1045666513 is 3156665401.

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 a de Polignac number, because none of the positive numbers 2^k-1045666513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045666813) 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, 872245 + ... + 873442.

It is an arithmetic number, because the mean of its divisors is an integer number (261853200).

Almost surely, 2^1045666513 is an apocalyptic number.

It is an amenable number.

1045666513 is a deficient number, since it is larger than the sum of its proper divisors (1746287).

1045666513 is an equidigital number, since it uses as much as digits as its factorization.

1045666513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746286.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1045666513 is about 32336.7672008196. The cubic root of 1045666513 is about 1014.9961619889.

The spelling of 1045666513 in words is "one billion, forty-five million, six hundred sixty-six thousand, five hundred thirteen".