1285116822 has 48 divisors (see below), whose sum is σ = 3040727040. Its totient is φ = 389022000.

The previous prime is 1285116821. The next prime is 1285116823. The reversal of 1285116822 is 2286115821.

It is an interprime number because it is at equal distance from previous prime (1285116821) and next prime (1285116823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285116821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225079 + ... + 230717.

It is an arithmetic number, because the mean of its divisors is an integer number (63348480).

Almost surely, 2^1285116822 is an apocalyptic number.

1285116822 is an abundant number, since it is smaller than the sum of its proper divisors (1755610218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285116822 is a wasteful number, since it uses less digits than its factorization.

1285116822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809 (or 6806 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 1285116822 is about 35848.5260784875. The cubic root of 1285116822 is about 1087.2119138612.

The spelling of 1285116822 in words is "one billion, two hundred eighty-five million, one hundred sixteen thousand, eight hundred twenty-two".