1285463519 has 2 divisors, whose sum is σ = 1285463520. Its totient is φ = 1285463518.

The previous prime is 1285463513. The next prime is 1285463533. The reversal of 1285463519 is 9153645821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285463519 - 2¹⁶ = 1285397983 is a prime.

It is a super-2 number, since 2×1285463519² = 3304832917359726722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1285463519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285463513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642731759 + 642731760.

It is an arithmetic number, because the mean of its divisors is an integer number (642731760).

Almost surely, 2^1285463519 is an apocalyptic number.

1285463519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285463519 is an equidigital number, since it uses as much as digits as its factorization.

1285463519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 1285463519 is about 35853.3613347480. The cubic root of 1285463519 is about 1087.3096739017.

The spelling of 1285463519 in words is "one billion, two hundred eighty-five million, four hundred sixty-three thousand, five hundred nineteen".