190748821923889 has 2 divisors, whose sum is σ = 190748821923890. Its totient is φ = 190748821923888.

The previous prime is 190748821923823. The next prime is 190748821923991. The reversal of 190748821923889 is 988329128847091.

190748821923889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137399821602289 + 53349000321600 = 11721767^2 + 7304040^2 .

It is a cyclic number.

It is not a de Polignac number, because 190748821923889 - 2¹⁹ = 190748821399601 is a prime.

It is a super-3 number, since 3×190748821923889³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (190748821920889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95374410961944 + 95374410961945.

It is an arithmetic number, because the mean of its divisors is an integer number (95374410961945).

Almost surely, 2^{190748821923889} is an apocalyptic number.

It is an amenable number.

190748821923889 is a deficient number, since it is larger than the sum of its proper divisors (1).

190748821923889 is an equidigital number, since it uses as much as digits as its factorization.

190748821923889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1003290624, while the sum is 79.

The spelling of 190748821923889 in words is "one hundred ninety trillion, seven hundred forty-eight billion, eight hundred twenty-one million, nine hundred twenty-three thousand, eight hundred eighty-nine".