1284415513 has 4 divisors (see below), whose sum is σ = 1292921728. Its totient is φ = 1275909300.

The previous prime is 1284415493. The next prime is 1284415541. The reversal of 1284415513 is 3155144821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3155144821 = 40847 ⋅77243.

It is a cyclic number.

It is not a de Polignac number, because 1284415513 - 2⁹ = 1284415001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284415543) 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, 4252881 + ... + 4253182.

It is an arithmetic number, because the mean of its divisors is an integer number (323230432).

Almost surely, 2^1284415513 is an apocalyptic number.

It is an amenable number.

1284415513 is a deficient number, since it is larger than the sum of its proper divisors (8506215).

1284415513 is an equidigital number, since it uses as much as digits as its factorization.

1284415513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8506214.

The product of its digits is 19200, while the sum is 34.

The square root of 1284415513 is about 35838.7431838785. The cubic root of 1284415513 is about 1087.0141081762.

The spelling of 1284415513 in words is "one billion, two hundred eighty-four million, four hundred fifteen thousand, five hundred thirteen".