1887628948693 has 4 divisors (see below), whose sum is σ = 1904946645580. Its totient is φ = 1870311251808.

The previous prime is 1887628948663. The next prime is 1887628948717. The reversal of 1887628948693 is 3968498267881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1213295641009 + 674333307684 = 1101497^2 + 821178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1887628948693 - 2¹⁷ = 1887628817621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887628948663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658848280 + ... + 8658848497.

It is an arithmetic number, because the mean of its divisors is an integer number (476236661395).

Almost surely, 2^{1887628948693} is an apocalyptic number.

It is an amenable number.

1887628948693 is a deficient number, since it is larger than the sum of its proper divisors (17317696887).

1887628948693 is a wasteful number, since it uses less digits than its factorization.

1887628948693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17317696886.

The product of its digits is 2006581248, while the sum is 79.

The spelling of 1887628948693 in words is "one trillion, eight hundred eighty-seven billion, six hundred twenty-eight million, nine hundred forty-eight thousand, six hundred ninety-three".