2061438739 has 2 divisors, whose sum is σ = 2061438740. Its totient is φ = 2061438738.

The previous prime is 2061438679. The next prime is 2061438749. The reversal of 2061438739 is 9378341602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2061438739 - 2¹¹ = 2061436691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2061438695 and 2061438704.

It is not a weakly prime, because it can be changed into another prime (2061438749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030719369 + 1030719370.

It is an arithmetic number, because the mean of its divisors is an integer number (1030719370).

Almost surely, 2^2061438739 is an apocalyptic number.

2061438739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061438739 is an equidigital number, since it uses as much as digits as its factorization.

2061438739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2061438739 is about 45403.0697089965. The cubic root of 2061438739 is about 1272.6924791986.

The spelling of 2061438739 in words is "two billion, sixty-one million, four hundred thirty-eight thousand, seven hundred thirty-nine".