1128336261 has 32 divisors (see below), whose sum is σ = 1711597440. Its totient is φ = 655444224.

The previous prime is 1128336259. The next prime is 1128336271. The reversal of 1128336261 is 1626338211.

It is not a de Polignac number, because 1128336261 - 2¹ = 1128336259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128336221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214515 + ... + 219711.

It is an arithmetic number, because the mean of its divisors is an integer number (53487420).

Almost surely, 2^1128336261 is an apocalyptic number.

It is an amenable number.

1128336261 is a deficient number, since it is larger than the sum of its proper divisors (583261179).

1128336261 is a wasteful number, since it uses less digits than its factorization.

1128336261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525.

The product of its digits is 10368, while the sum is 33.

The square root of 1128336261 is about 33590.7168872592. The cubic root of 1128336261 is about 1041.0690009731.

The spelling of 1128336261 in words is "one billion, one hundred twenty-eight million, three hundred thirty-six thousand, two hundred sixty-one".