1016617865 has 4 divisors (see below), whose sum is σ = 1219941444. Its totient is φ = 813294288.

The previous prime is 1016617859. The next prime is 1016617873. The reversal of 1016617865 is 5687166101.

1016617865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 494083984 + 522533881 = 22228^2 + 22859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016617865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101661782 + ... + 101661791.

It is an arithmetic number, because the mean of its divisors is an integer number (304985361).

Almost surely, 2^1016617865 is an apocalyptic number.

It is an amenable number.

1016617865 is a deficient number, since it is larger than the sum of its proper divisors (203323579).

1016617865 is an equidigital number, since it uses as much as digits as its factorization.

1016617865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203323578.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 1016617865 is about 31884.4455024703. The cubic root of 1016617865 is about 1005.5088847941.

The spelling of 1016617865 in words is "one billion, sixteen million, six hundred seventeen thousand, eight hundred sixty-five".