1285446383 has 4 divisors (see below), whose sum is σ = 1384326888. Its totient is φ = 1186565880.

The previous prime is 1285446361. The next prime is 1285446413. The reversal of 1285446383 is 3836445821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1285446383 - 2¹⁶ = 1285380847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285446353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49440233 + ... + 49440258.

It is an arithmetic number, because the mean of its divisors is an integer number (346081722).

Almost surely, 2^1285446383 is an apocalyptic number.

1285446383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1285446383 is a deficient number, since it is larger than the sum of its proper divisors (98880505).

1285446383 is an equidigital number, since it uses as much as digits as its factorization.

1285446383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98880504.

The product of its digits is 552960, while the sum is 44.

The square root of 1285446383 is about 35853.1223605420. The cubic root of 1285446383 is about 1087.3048423835.

The spelling of 1285446383 in words is "one billion, two hundred eighty-five million, four hundred forty-six thousand, three hundred eighty-three".