1284760013 has 4 divisors (see below), whose sum is σ = 1340619168. Its totient is φ = 1228900860.

The previous prime is 1284760003. The next prime is 1284760019. The reversal of 1284760013 is 3100674821.

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 1284760013 - 2²⁴ = 1267982797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284760019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27929543 + ... + 27929588.

It is an arithmetic number, because the mean of its divisors is an integer number (335154792).

Almost surely, 2^1284760013 is an apocalyptic number.

It is an amenable number.

1284760013 is a deficient number, since it is larger than the sum of its proper divisors (55859155).

1284760013 is an equidigital number, since it uses as much as digits as its factorization.

1284760013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55859154.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1284760013 is about 35843.5491127762. The cubic root of 1284760013 is about 1087.1112841242. Note that the first 3 decimals are identical.

The spelling of 1284760013 in words is "one billion, two hundred eighty-four million, seven hundred sixty thousand, thirteen".