1941188306389 has 2 divisors, whose sum is σ = 1941188306390. Its totient is φ = 1941188306388.

The previous prime is 1941188306329. The next prime is 1941188306527. The reversal of 1941188306389 is 9836038811491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209450062500 + 731738243889 = 1099750^2 + 855417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1941188306389 - 2⁷ = 1941188306261 is a prime.

It is a super-2 number, since 2×1941188306389² (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 (1941188306329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970594153194 + 970594153195.

It is an arithmetic number, because the mean of its divisors is an integer number (970594153195).

Almost surely, 2^{1941188306389} is an apocalyptic number.

It is an amenable number.

1941188306389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1941188306389 is an equidigital number, since it uses as much as digits as its factorization.

1941188306389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 1941188306389 in words is "one trillion, nine hundred forty-one billion, one hundred eighty-eight million, three hundred six thousand, three hundred eighty-nine".