1286161360 has 80 divisors (see below), whose sum is σ = 3301663680. Its totient is φ = 462033920.

The previous prime is 1286161313. The next prime is 1286161369. The reversal of 1286161360 is 631616821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1286161360² = 3308422087914099200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286161369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64236 + ... + 81844.

It is an arithmetic number, because the mean of its divisors is an integer number (41270796).

Almost surely, 2^1286161360 is an apocalyptic number.

1286161360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286161360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650831840).

1286161360 is an abundant number, since it is smaller than the sum of its proper divisors (2015502320).

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

1286161360 is a wasteful number, since it uses less digits than its factorization.

1286161360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17716 (or 17710 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1286161360 is about 35863.0918912466. The cubic root of 1286161360 is about 1087.5063946425.

The spelling of 1286161360 in words is "one billion, two hundred eighty-six million, one hundred sixty-one thousand, three hundred sixty".