1156805268 has 24 divisors (see below), whose sum is σ = 2729543040. Its totient is φ = 381268800.

The previous prime is 1156805261. The next prime is 1156805297. The reversal of 1156805268 is 8625086511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156805261) 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, 540508 + ... + 542643.

It is an arithmetic number, because the mean of its divisors is an integer number (113730960).

Almost surely, 2^1156805268 is an apocalyptic number.

It is an amenable number.

1156805268 is an abundant number, since it is smaller than the sum of its proper divisors (1572737772).

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

1156805268 is a wasteful number, since it uses less digits than its factorization.

1156805268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083247 (or 1083245 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 1156805268 is about 34011.8401148776. The cubic root of 1156805268 is about 1049.7521011143.

The spelling of 1156805268 in words is "one billion, one hundred fifty-six million, eight hundred five thousand, two hundred sixty-eight".