1002915001865 has 16 divisors (see below), whose sum is σ = 1375522186752. Its totient is φ = 687665194944.

The previous prime is 1002915001849. The next prime is 1002915001877. The reversal of 1002915001865 is 5681005192001.

It is not a de Polignac number, because 1002915001865 - 2⁴ = 1002915001849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486074 + ... + 1497363.

It is an arithmetic number, because the mean of its divisors is an integer number (85970136672).

Almost surely, 2^{1002915001865} is an apocalyptic number.

It is an amenable number.

1002915001865 is a deficient number, since it is larger than the sum of its proper divisors (372607184887).

1002915001865 is a wasteful number, since it uses less digits than its factorization.

1002915001865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997896.

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 1002915001865 in words is "one trillion, two billion, nine hundred fifteen million, one thousand, eight hundred sixty-five".