1288881364 has 12 divisors (see below), whose sum is σ = 2260778688. Its totient is φ = 642944600.

The previous prime is 1288881323. The next prime is 1288881403. The reversal of 1288881364 is 4631888821.

It is a super-2 number, since 2×1288881364² = 3322430340933000992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372082 + ... + 375529.

It is an arithmetic number, because the mean of its divisors is an integer number (188398224).

Almost surely, 2^1288881364 is an apocalyptic number.

It is an amenable number.

1288881364 is a deficient number, since it is larger than the sum of its proper divisors (971897324).

1288881364 is a wasteful number, since it uses less digits than its factorization.

1288881364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748046 (or 748044 counting only the distinct ones).

The product of its digits is 589824, while the sum is 49.

The square root of 1288881364 is about 35900.9939138180. The cubic root of 1288881364 is about 1088.2724827998.

The spelling of 1288881364 in words is "one billion, two hundred eighty-eight million, eight hundred eighty-one thousand, three hundred sixty-four".