1189056256 has 36 divisors (see below), whose sum is σ = 2376207232. Its totient is φ = 593842176.

The previous prime is 1189056247. The next prime is 1189056259. The reversal of 1189056256 is 6526509811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189056259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276136 + ... + 280408.

Almost surely, 2^1189056256 is an apocalyptic number.

1189056256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1189056256 is a deficient number, since it is larger than the sum of its proper divisors (1187150976).

1189056256 is an equidigital number, since it uses as much as digits as its factorization.

1189056256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1189056256 is about 34482.6950222862. The cubic root of 1189056256 is about 1059.4182924341.

The spelling of 1189056256 in words is "one billion, one hundred eighty-nine million, fifty-six thousand, two hundred fifty-six".