1069128291 has 48 divisors (see below), whose sum is σ = 1805361152. Its totient is φ = 550851840.

The previous prime is 1069128257. The next prime is 1069128293. The reversal of 1069128291 is 1928219601.

It is not a de Polignac number, because 1069128291 - 2⁹ = 1069127779 is a prime.

It is a super-2 number, since 2×1069128291² = 2286070605233161362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1069128293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321051 + ... + 324363.

Almost surely, 2^1069128291 is an apocalyptic number.

1069128291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1069128291 is a deficient number, since it is larger than the sum of its proper divisors (736232861).

1069128291 is a wasteful number, since it uses less digits than its factorization.

1069128291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472 (or 3461 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1069128291 is about 32697.5272918305. The cubic root of 1069128291 is about 1022.5312918172.

The spelling of 1069128291 in words is "one billion, sixty-nine million, one hundred twenty-eight thousand, two hundred ninety-one".