163394673 has 32 divisors (see below), whose sum is σ = 239715840. Its totient is φ = 98392320.

The previous prime is 163394653. The next prime is 163394677. The reversal of 163394673 is 376493361.

It is not a de Polignac number, because 163394673 - 2⁵ = 163394641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163394677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557515 + ... + 557807.

It is an arithmetic number, because the mean of its divisors is an integer number (7491120).

Almost surely, 2^163394673 is an apocalyptic number.

163394673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163394673 is a deficient number, since it is larger than the sum of its proper divisors (76321167).

163394673 is a wasteful number, since it uses less digits than its factorization.

163394673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 244944, while the sum is 42.

The square root of 163394673 is about 12782.5925774078. The cubic root of 163394673 is about 546.6960858564.

It can be divided in two parts, 16339 and 4673, that added together give a palindrome (21012).

The spelling of 163394673 in words is "one hundred sixty-three million, three hundred ninety-four thousand, six hundred seventy-three".