1865386312107 has 16 divisors (see below), whose sum is σ = 2644007704320. Its totient is φ = 1166473980000.

The previous prime is 1865386312099. The next prime is 1865386312117. The reversal of 1865386312107 is 7012136835681.

It is not a de Polignac number, because 1865386312107 - 2³ = 1865386312099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1865386312107.

It is not an unprimeable number, because it can be changed into a prime (1865386312117) 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, 162004519 + ... + 162016032.

It is an arithmetic number, because the mean of its divisors is an integer number (165250481520).

Almost surely, 2^{1865386312107} is an apocalyptic number.

1865386312107 is a deficient number, since it is larger than the sum of its proper divisors (778621392213).

1865386312107 is a wasteful number, since it uses less digits than its factorization.

1865386312107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324020674.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 1865386312107 in words is "one trillion, eight hundred sixty-five billion, three hundred eighty-six million, three hundred twelve thousand, one hundred seven".