1888705555049 has 2 divisors, whose sum is σ = 1888705555050. Its totient is φ = 1888705555048.

The previous prime is 1888705555003. The next prime is 1888705555063. The reversal of 1888705555049 is 9405555078881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1770123811600 + 118581743449 = 1330460^2 + 344357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1888705555049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1888705555249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944352777524 + 944352777525.

It is an arithmetic number, because the mean of its divisors is an integer number (944352777525).

Almost surely, 2^{1888705555049} is an apocalyptic number.

It is an amenable number.

1888705555049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888705555049 is an equidigital number, since it uses as much as digits as its factorization.

1888705555049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640000, while the sum is 65.

The spelling of 1888705555049 in words is "one trillion, eight hundred eighty-eight billion, seven hundred five million, five hundred fifty-five thousand, forty-nine".