1728873145886 has 16 divisors (see below), whose sum is σ = 2602908565920. Its totient is φ = 861241970400.

The previous prime is 1728873145877. The next prime is 1728873145897. The reversal of 1728873145886 is 6885413788271.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562565 + ... + 1942736.

It is an arithmetic number, because the mean of its divisors is an integer number (162681785370).

Almost surely, 2^{1728873145886} is an apocalyptic number.

1728873145886 is a deficient number, since it is larger than the sum of its proper divisors (874035420034).

1728873145886 is a wasteful number, since it uses less digits than its factorization.

1728873145886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506579.

The product of its digits is 144506880, while the sum is 68.

The spelling of 1728873145886 in words is "one trillion, seven hundred twenty-eight billion, eight hundred seventy-three million, one hundred forty-five thousand, eight hundred eighty-six".