2006139049 has 2 divisors, whose sum is σ = 2006139050. Its totient is φ = 2006139048.

The previous prime is 2006139019. The next prime is 2006139089. The reversal of 2006139049 is 9409316002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1938817024 + 67322025 = 44032^2 + 8205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006139049 - 2¹⁵ = 2006106281 is a prime.

It is not a weakly prime, because it can be changed into another prime (2006139019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003069524 + 1003069525.

It is an arithmetic number, because the mean of its divisors is an integer number (1003069525).

Almost surely, 2^2006139049 is an apocalyptic number.

It is an amenable number.

2006139049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006139049 is an equidigital number, since it uses as much as digits as its factorization.

2006139049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2006139049 is about 44789.9436146106. The cubic root of 2006139049 is about 1261.2088526552.

The spelling of 2006139049 in words is "two billion, six million, one hundred thirty-nine thousand, forty-nine".