1888006993 has 2 divisors, whose sum is σ = 1888006994. Its totient is φ = 1888006992.

The previous prime is 1888006987. The next prime is 1888006999. The reversal of 1888006993 is 3996008881.

It is a balanced prime because it is at equal distance from previous prime (1888006987) and next prime (1888006999).

It can be written as a sum of positive squares in only one way, i.e., 1429747344 + 458259649 = 37812^2 + 21407^2 .

It is an emirp because it is prime and its reverse (3996008881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1888006993 is a prime.

1888006993 is a modest number, since divided by 6993 gives 1888 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1888006993.

It is not a weakly prime, because it can be changed into another prime (1888006999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944003496 + 944003497.

It is an arithmetic number, because the mean of its divisors is an integer number (944003497).

Almost surely, 2^1888006993 is an apocalyptic number.

It is an amenable number.

1888006993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888006993 is an equidigital number, since it uses as much as digits as its factorization.

1888006993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1888006993 is about 43451.2024344551. The cubic root of 1888006993 is about 1235.9508471235.

The spelling of 1888006993 in words is "one billion, eight hundred eighty-eight million, six thousand, nine hundred ninety-three".