2139570673 has 2 divisors, whose sum is σ = 2139570674. Its totient is φ = 2139570672.

The previous prime is 2139570661. The next prime is 2139570709. The reversal of 2139570673 is 3760759312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1850978529 + 288592144 = 43023^2 + 16988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139570673 - 2²¹ = 2137473521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2139570623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069785336 + 1069785337.

It is an arithmetic number, because the mean of its divisors is an integer number (1069785337).

Almost surely, 2^2139570673 is an apocalyptic number.

It is an amenable number.

2139570673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139570673 is an equidigital number, since it uses as much as digits as its factorization.

2139570673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 2139570673 is about 46255.4934359153. The cubic root of 2139570673 is about 1288.5725598327.

The spelling of 2139570673 in words is "two billion, one hundred thirty-nine million, five hundred seventy thousand, six hundred seventy-three".