1672117571 has 2 divisors, whose sum is σ = 1672117572. Its totient is φ = 1672117570.

The previous prime is 1672117547. The next prime is 1672117609. The reversal of 1672117571 is 1757112761.

It is an a-pointer prime, because the next prime (1672117609) can be obtained adding 1672117571 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1672117571 - 2⁶ = 1672117507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672110571) 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, 836058785 + 836058786.

It is an arithmetic number, because the mean of its divisors is an integer number (836058786).

Almost surely, 2^1672117571 is an apocalyptic number.

1672117571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672117571 is an equidigital number, since it uses as much as digits as its factorization.

1672117571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20580, while the sum is 38.

The square root of 1672117571 is about 40891.5342216454. The cubic root of 1672117571 is about 1186.9222472774.

The spelling of 1672117571 in words is "one billion, six hundred seventy-two million, one hundred seventeen thousand, five hundred seventy-one".