163748285 has 4 divisors (see below), whose sum is σ = 196497948. Its totient is φ = 130998624.

The previous prime is 163748281. The next prime is 163748287. The reversal of 163748285 is 582847361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30184036 + 133564249 = 5494^2 + 11557^2 .

It is a cyclic number.

It is not a de Polignac number, because 163748285 - 2² = 163748281 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 (163748281) 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, 16374824 + ... + 16374833.

It is an arithmetic number, because the mean of its divisors is an integer number (49124487).

Almost surely, 2^163748285 is an apocalyptic number.

It is an amenable number.

163748285 is a deficient number, since it is larger than the sum of its proper divisors (32749663).

163748285 is an equidigital number, since it uses as much as digits as its factorization.

163748285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32749662.

The product of its digits is 322560, while the sum is 44.

The square root of 163748285 is about 12796.4168812992. The cubic root of 163748285 is about 547.0901807251.

The spelling of 163748285 in words is "one hundred sixty-three million, seven hundred forty-eight thousand, two hundred eighty-five".