1282281168 has 160 divisors (see below), whose sum is σ = 4147234560. Its totient is φ = 332881920.

The previous prime is 1282281163. The next prime is 1282281233. The reversal of 1282281168 is 8611822821.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282281163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161778 + ... + 169518.

It is an arithmetic number, because the mean of its divisors is an integer number (25920216).

Almost surely, 2^1282281168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282281168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073617280).

1282281168 is an abundant number, since it is smaller than the sum of its proper divisors (2864953392).

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

1282281168 is a wasteful number, since it uses less digits than its factorization.

1282281168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805 (or 7799 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 1282281168 is about 35808.9537406498. The cubic root of 1282281168 is about 1086.4116682874.

The spelling of 1282281168 in words is "one billion, two hundred eighty-two million, two hundred eighty-one thousand, one hundred sixty-eight".