1928170284243 has 32 divisors (see below), whose sum is σ = 3006737817600. Its totient is φ = 1076100663456.

The previous prime is 1928170284221. The next prime is 1928170284251. The reversal of 1928170284243 is 3424820718291.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1928170284243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1928170284263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11965078 + ... + 12125156.

It is an arithmetic number, because the mean of its divisors is an integer number (93960556800).

Almost surely, 2^{1928170284243} is an apocalyptic number.

1928170284243 is a deficient number, since it is larger than the sum of its proper divisors (1078567533357).

1928170284243 is a wasteful number, since it uses less digits than its factorization.

1928170284243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173471.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 1928170284243 in words is "one trillion, nine hundred twenty-eight billion, one hundred seventy million, two hundred eighty-four thousand, two hundred forty-three".