163170047 has 4 divisors (see below), whose sum is σ = 163213440. Its totient is φ = 163126656.

The previous prime is 163170023. The next prime is 163170053. The reversal of 163170047 is 740071361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740071361 = 41 ⋅18050521.

It is a cyclic number.

It is not a de Polignac number, because 163170047 - 2⁶ = 163169983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163170067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15458 + ... + 23775.

It is an arithmetic number, because the mean of its divisors is an integer number (40803360).

Almost surely, 2^163170047 is an apocalyptic number.

163170047 is a deficient number, since it is larger than the sum of its proper divisors (43393).

163170047 is an equidigital number, since it uses as much as digits as its factorization.

163170047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43392.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 163170047 is about 12773.8031533291. The cubic root of 163170047 is about 546.4454484078.

The spelling of 163170047 in words is "one hundred sixty-three million, one hundred seventy thousand, forty-seven".