1673865655 has 16 divisors (see below), whose sum is σ = 2504277504. Its totient is φ = 1043448480.

The previous prime is 1673865643. The next prime is 1673865671. The reversal of 1673865655 is 5565683761.

It is not a de Polignac number, because 1673865655 - 2¹⁵ = 1673832887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2173467 + ... + 2174236.

It is an arithmetic number, because the mean of its divisors is an integer number (156517344).

Almost surely, 2^1673865655 is an apocalyptic number.

1673865655 is a deficient number, since it is larger than the sum of its proper divisors (830411849).

1673865655 is a wasteful number, since it uses less digits than its factorization.

1673865655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347726.

The product of its digits is 4536000, while the sum is 52.

The square root of 1673865655 is about 40912.9032824609. The cubic root of 1673865655 is about 1187.3357184374.

The spelling of 1673865655 in words is "one billion, six hundred seventy-three million, eight hundred sixty-five thousand, six hundred fifty-five".