873778986193 has 4 divisors (see below), whose sum is σ = 874571171328. Its totient is φ = 872986801060.

The previous prime is 873778986187. The next prime is 873778986211. The reversal of 873778986193 is 391689877378.

It is a happy number.

873778986193 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 391689877378 = 2 ⋅195844938689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-873778986193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (873778986133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396090913 + ... + 396093118.

It is an arithmetic number, because the mean of its divisors is an integer number (218642792832).

Almost surely, 2^873778986193 is an apocalyptic number.

It is an amenable number.

873778986193 is a deficient number, since it is larger than the sum of its proper divisors (792185135).

873778986193 is a wasteful number, since it uses less digits than its factorization.

873778986193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792185134.

The product of its digits is 768144384, while the sum is 76.

The spelling of 873778986193 in words is "eight hundred seventy-three billion, seven hundred seventy-eight million, nine hundred eighty-six thousand, one hundred ninety-three".