1673265791 has 2 divisors, whose sum is σ = 1673265792. Its totient is φ = 1673265790.

The previous prime is 1673265773. The next prime is 1673265793. The reversal of 1673265791 is 1975623761.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673265791 is a prime.

Together with 1673265793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673265793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836632895 + 836632896.

It is an arithmetic number, because the mean of its divisors is an integer number (836632896).

Almost surely, 2^1673265791 is an apocalyptic number.

1673265791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673265791 is an equidigital number, since it uses as much as digits as its factorization.

1673265791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 47.

The square root of 1673265791 is about 40905.5716376144. The cubic root of 1673265791 is about 1187.1938661427.

The spelling of 1673265791 in words is "one billion, six hundred seventy-three million, two hundred sixty-five thousand, seven hundred ninety-one".