1284384545 has 16 divisors (see below), whose sum is σ = 1552016592. Its totient is φ = 1020364800.

The previous prime is 1284384539. The next prime is 1284384547. The reversal of 1284384545 is 5454834821.

It can be written as a sum of positive squares in 8 ways, for example, as 26050816 + 1258333729 = 5104^2 + 35473^2 .

It is not a de Polignac number, because 1284384545 - 2⁶ = 1284384481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1284384496 and 1284384505.

It is not an unprimeable number, because it can be changed into a prime (1284384547) 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, 457145 + ... + 459945.

It is an arithmetic number, because the mean of its divisors is an integer number (97001037).

Almost surely, 2^1284384545 is an apocalyptic number.

It is an amenable number.

1284384545 is a deficient number, since it is larger than the sum of its proper divisors (267632047).

1284384545 is a wasteful number, since it uses less digits than its factorization.

1284384545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412.

The product of its digits is 614400, while the sum is 44.

The square root of 1284384545 is about 35838.3111348735. The cubic root of 1284384545 is about 1087.0053719266.

The spelling of 1284384545 in words is "one billion, two hundred eighty-four million, three hundred eighty-four thousand, five hundred forty-five".