1289533068 has 24 divisors (see below), whose sum is σ = 3343234160. Its totient is φ = 429844320.

The previous prime is 1289533067. The next prime is 1289533073. The reversal of 1289533068 is 8603359821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1289533067) 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, 5969953 + ... + 5970168.

Almost surely, 2^1289533068 is an apocalyptic number.

1289533068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1289533068 is an abundant number, since it is smaller than the sum of its proper divisors (2053701092).

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

1289533068 is a wasteful number, since it uses less digits than its factorization.

1289533068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940134 (or 11940126 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1289533068 is about 35910.0691728657. The cubic root of 1289533068 is about 1088.4558749117.

The spelling of 1289533068 in words is "one billion, two hundred eighty-nine million, five hundred thirty-three thousand, sixty-eight".