163670473 has 4 divisors (see below), whose sum is σ = 164007040. Its totient is φ = 163333908.

The previous prime is 163670449. The next prime is 163670489. The reversal of 163670473 is 374076361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163670473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163676473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167553 + ... + 168526.

It is an arithmetic number, because the mean of its divisors is an integer number (41001760).

Almost surely, 2^163670473 is an apocalyptic number.

It is an amenable number.

163670473 is a deficient number, since it is larger than the sum of its proper divisors (336567).

163670473 is an equidigital number, since it uses as much as digits as its factorization.

163670473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336566.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 163670473 is about 12793.3761376737. The cubic root of 163670473 is about 547.0035092302.

The spelling of 163670473 in words is "one hundred sixty-three million, six hundred seventy thousand, four hundred seventy-three".