163260073 has 4 divisors (see below), whose sum is σ = 167242068. Its totient is φ = 159278080.

The previous prime is 163260067. The next prime is 163260079. The reversal of 163260073 is 370062361.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (163260067) and next prime (163260079).

It can be written as a sum of positive squares in 2 ways, for example, as 39538944 + 123721129 = 6288^2 + 11123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163260073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163260079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990936 + ... + 1991017.

It is an arithmetic number, because the mean of its divisors is an integer number (41810517).

Almost surely, 2^163260073 is an apocalyptic number.

It is an amenable number.

163260073 is a deficient number, since it is larger than the sum of its proper divisors (3981995).

163260073 is an equidigital number, since it uses as much as digits as its factorization.

163260073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981994.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 163260073 is about 12777.3265200511. The cubic root of 163260073 is about 546.5459269255.

The spelling of 163260073 in words is "one hundred sixty-three million, two hundred sixty thousand, seventy-three".