1673709139 has 2 divisors, whose sum is σ = 1673709140. Its totient is φ = 1673709138.

The previous prime is 1673709049. The next prime is 1673709157. The reversal of 1673709139 is 9319073761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1673709139 - 2¹⁵ = 1673676371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1673709239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836854569 + 836854570.

It is an arithmetic number, because the mean of its divisors is an integer number (836854570).

Almost surely, 2^1673709139 is an apocalyptic number.

1673709139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673709139 is an equidigital number, since it uses as much as digits as its factorization.

1673709139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 1673709139 is about 40910.9904426671. The cubic root of 1673709139 is about 1187.2987097266.

The spelling of 1673709139 in words is "one billion, six hundred seventy-three million, seven hundred nine thousand, one hundred thirty-nine".