1083878265 has 48 divisors (see below), whose sum is σ = 1897789824. Its totient is φ = 526394880.

The previous prime is 1083878227. The next prime is 1083878267. The reversal of 1083878265 is 5628783801.

It is not a de Polignac number, because 1083878265 - 2¹⁰ = 1083877241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1083878267) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242844 + ... + 247266.

It is an arithmetic number, because the mean of its divisors is an integer number (39537288).

Almost surely, 2^1083878265 is an apocalyptic number.

1083878265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1083878265 is a deficient number, since it is larger than the sum of its proper divisors (813911559).

1083878265 is a wasteful number, since it uses less digits than its factorization.

1083878265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510 (or 4479 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 1083878265 is about 32922.3064957484. The cubic root of 1083878265 is about 1027.2122008767.

The spelling of 1083878265 in words is "one billion, eighty-three million, eight hundred seventy-eight thousand, two hundred sixty-five".