1888685828797 has 2 divisors, whose sum is σ = 1888685828798. Its totient is φ = 1888685828796.

The previous prime is 1888685828789. The next prime is 1888685828831. The reversal of 1888685828797 is 7978285868881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1498484463876 + 390201364921 = 1224126^2 + 624661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1888685828797 - 2³ = 1888685828789 is a prime.

It is a super-2 number, since 2×1888685828797² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1888685828717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944342914398 + 944342914399.

It is an arithmetic number, because the mean of its divisors is an integer number (944342914399).

Almost surely, 2^{1888685828797} is an apocalyptic number.

It is an amenable number.

1888685828797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888685828797 is an equidigital number, since it uses as much as digits as its factorization.

1888685828797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6936330240, while the sum is 85.

The spelling of 1888685828797 in words is "one trillion, eight hundred eighty-eight billion, six hundred eighty-five million, eight hundred twenty-eight thousand, seven hundred ninety-seven".