1128867065 has 8 divisors (see below), whose sum is σ = 1434325320. Its totient is φ = 849970432.

The previous prime is 1128867049. The next prime is 1128867067. The reversal of 1128867065 is 5607688211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56370064 + 1072497001 = 7508^2 + 32749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128867065 - 2⁴ = 1128867049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1128867067) 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, 6640310 + ... + 6640479.

It is an arithmetic number, because the mean of its divisors is an integer number (179290665).

Almost surely, 2^1128867065 is an apocalyptic number.

It is an amenable number.

1128867065 is a deficient number, since it is larger than the sum of its proper divisors (305458255).

1128867065 is a wasteful number, since it uses less digits than its factorization.

1128867065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280811.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 1128867065 is about 33598.6170102283. The cubic root of 1128867065 is about 1041.2322256482.

The spelling of 1128867065 in words is "one billion, one hundred twenty-eight million, eight hundred sixty-seven thousand, sixty-five".