6401839111 has 2 divisors, whose sum is σ = 6401839112. Its totient is φ = 6401839110.

The previous prime is 6401839069. The next prime is 6401839127. The reversal of 6401839111 is 1119381046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6401839111 - 2¹⁵ = 6401806343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6401830111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200919555 + 3200919556.

It is an arithmetic number, because the mean of its divisors is an integer number (3200919556).

Almost surely, 2^6401839111 is an apocalyptic number.

6401839111 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401839111 is an equidigital number, since it uses as much as digits as its factorization.

6401839111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 6401839111 is about 80011.4936181046. The cubic root of 6401839111 is about 1856.8133580188.

The spelling of 6401839111 in words is "six billion, four hundred one million, eight hundred thirty-nine thousand, one hundred eleven".