1868449964195 has 16 divisors (see below), whose sum is σ = 2342262113280. Its totient is φ = 1428158412384.

The previous prime is 1868449964189. The next prime is 1868449964243. The reversal of 1868449964195 is 5914699448681.

It is a cyclic number.

It is not a de Polignac number, because 1868449964195 - 2²⁴ = 1868433186979 is a prime.

It is a super-2 number, since 2×1868449964195² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9056615 + ... + 9260624.

It is an arithmetic number, because the mean of its divisors is an integer number (146391382080).

Almost surely, 2^{1868449964195} is an apocalyptic number.

1868449964195 is a deficient number, since it is larger than the sum of its proper divisors (473812149085).

1868449964195 is a wasteful number, since it uses less digits than its factorization.

1868449964195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318154.

The product of its digits is 537477120, while the sum is 74.

The spelling of 1868449964195 in words is "one trillion, eight hundred sixty-eight billion, four hundred forty-nine million, nine hundred sixty-four thousand, one hundred ninety-five".