1016865807 has 16 divisors (see below), whose sum is σ = 1427871360. Its totient is φ = 641920032.

The previous prime is 1016865779. The next prime is 1016865827. The reversal of 1016865807 is 7085686101.

It is not a de Polignac number, because 1016865807 - 2¹¹ = 1016863759 is a prime.

It is a super-2 number, since 2×1016865807² = 2068032138891522498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016865827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191928 + ... + 197154.

It is an arithmetic number, because the mean of its divisors is an integer number (89241960).

Almost surely, 2^1016865807 is an apocalyptic number.

1016865807 is a deficient number, since it is larger than the sum of its proper divisors (411005553).

1016865807 is a wasteful number, since it uses less digits than its factorization.

1016865807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 1016865807 is about 31888.3333995366. Note that the first 4 decimals coincide. The cubic root of 1016865807 is about 1005.5906223632.

The spelling of 1016865807 in words is "one billion, sixteen million, eight hundred sixty-five thousand, eight hundred seven".