3841780109989 has 2 divisors, whose sum is σ = 3841780109990. Its totient is φ = 3841780109988.

The previous prime is 3841780109927. The next prime is 3841780110001. The reversal of 3841780109989 is 9899010871483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3837453759364 + 4326350625 = 1958942^2 + 65775^2 .

It is a cyclic number.

It is not a de Polignac number, because 3841780109989 - 2¹⁷ = 3841779978917 is a prime.

It is a super-3 number, since 3×3841780109989³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3841780101989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1920890054994 + 1920890054995.

It is an arithmetic number, because the mean of its divisors is an integer number (1920890054995).

Almost surely, 2^{3841780109989} is an apocalyptic number.

It is an amenable number.

3841780109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3841780109989 is an equidigital number, since it uses as much as digits as its factorization.

3841780109989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 67.

The spelling of 3841780109989 in words is "three trillion, eight hundred forty-one billion, seven hundred eighty million, one hundred nine thousand, nine hundred eighty-nine".