1013228865 has 64 divisors (see below), whose sum is σ = 2068531200. Its totient is φ = 465393600.

The previous prime is 1013228863. The next prime is 1013228897. The reversal of 1013228865 is 5688223101.

It is a happy number.

It is not a de Polignac number, because 1013228865 - 2¹ = 1013228863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1013228861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10260 + ... + 46170.

It is an arithmetic number, because the mean of its divisors is an integer number (32320800).

Almost surely, 2^1013228865 is an apocalyptic number.

1013228865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1013228865 is an abundant number, since it is smaller than the sum of its proper divisors (1055302335).

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

1013228865 is a wasteful number, since it uses less digits than its factorization.

1013228865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35955 (or 35949 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1013228865 is about 31831.2561015113. The cubic root of 1013228865 is about 1004.3903185619.

The spelling of 1013228865 in words is "one billion, thirteen million, two hundred twenty-eight thousand, eight hundred sixty-five".