1285802853 has 8 divisors (see below), whose sum is σ = 1719261888. Its totient is φ = 854772864.

The previous prime is 1285802849. The next prime is 1285802857. The reversal of 1285802853 is 3582085821.

1285802853 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1285802849) and next prime (1285802857).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1285802853 - 2² = 1285802849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285802857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606025 + ... + 608142.

It is an arithmetic number, because the mean of its divisors is an integer number (214907736).

Almost surely, 2^1285802853 is an apocalyptic number.

It is an amenable number.

1285802853 is a deficient number, since it is larger than the sum of its proper divisors (433459035).

1285802853 is a wasteful number, since it uses less digits than its factorization.

1285802853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214523.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 1285802853 is about 35858.0932705575. The cubic root of 1285802853 is about 1087.4053407369.

The spelling of 1285802853 in words is "one billion, two hundred eighty-five million, eight hundred two thousand, eight hundred fifty-three".