1672865543 has 2 divisors, whose sum is σ = 1672865544. Its totient is φ = 1672865542.

The previous prime is 1672865503. The next prime is 1672865549. The reversal of 1672865543 is 3455682761.

It is a strong prime.

It is an emirp because it is prime and its reverse (3455682761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1672865543 - 2¹⁸ = 1672603399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672865549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836432771 + 836432772.

It is an arithmetic number, because the mean of its divisors is an integer number (836432772).

Almost surely, 2^1672865543 is an apocalyptic number.

1672865543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672865543 is an equidigital number, since it uses as much as digits as its factorization.

1672865543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 1672865543 is about 40900.6790041437. The cubic root of 1672865543 is about 1187.0991990023.

The spelling of 1672865543 in words is "one billion, six hundred seventy-two million, eight hundred sixty-five thousand, five hundred forty-three".