1284874853 has 2 divisors, whose sum is σ = 1284874854. Its totient is φ = 1284874852.

The previous prime is 1284874849. The next prime is 1284874889. The reversal of 1284874853 is 3584784821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652955809 + 631919044 = 25553^2 + 25138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284874853 - 2² = 1284874849 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284474853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642437426 + 642437427.

It is an arithmetic number, because the mean of its divisors is an integer number (642437427).

Almost surely, 2^1284874853 is an apocalyptic number.

It is an amenable number.

1284874853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284874853 is an equidigital number, since it uses as much as digits as its factorization.

1284874853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1720320, while the sum is 50.

The square root of 1284874853 is about 35845.1510388783. The cubic root of 1284874853 is about 1087.1436741267.

The spelling of 1284874853 in words is "one billion, two hundred eighty-four million, eight hundred seventy-four thousand, eight hundred fifty-three".