1159563256 has 16 divisors (see below), whose sum is σ = 2215204200. Its totient is φ = 568842144.

The previous prime is 1159563233. The next prime is 1159563259. The reversal of 1159563256 is 6523659511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159563259) 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, 1366986 + ... + 1367833.

Almost surely, 2^1159563256 is an apocalyptic number.

It is an amenable number.

1159563256 is a deficient number, since it is larger than the sum of its proper divisors (1055640944).

1159563256 is a wasteful number, since it uses less digits than its factorization.

1159563256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734878 (or 2734874 counting only the distinct ones).

The product of its digits is 243000, while the sum is 43.

The square root of 1159563256 is about 34052.3605055509. The cubic root of 1159563256 is about 1050.5856916824.

The spelling of 1159563256 in words is "one billion, one hundred fifty-nine million, five hundred sixty-three thousand, two hundred fifty-six".