163773461 has 4 divisors (see below), whose sum is σ = 173407212. Its totient is φ = 154139712.

The previous prime is 163773443. The next prime is 163773473. The reversal of 163773461 is 164377361.

163773461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164377361 = 4783 ⋅34367.

It can be written as a sum of positive squares in 2 ways, for example, as 124322500 + 39450961 = 11150^2 + 6281^2 .

It is a cyclic number.

It is not a de Polignac number, because 163773461 - 2⁶ = 163773397 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 (163772461) 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, 4816850 + ... + 4816883.

It is an arithmetic number, because the mean of its divisors is an integer number (43351803).

Almost surely, 2^163773461 is an apocalyptic number.

It is an amenable number.

163773461 is a deficient number, since it is larger than the sum of its proper divisors (9633751).

163773461 is an equidigital number, since it uses as much as digits as its factorization.

163773461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633750.

The product of its digits is 63504, while the sum is 38.

The square root of 163773461 is about 12797.4005563630. The cubic root of 163773461 is about 547.1182173273.

The spelling of 163773461 in words is "one hundred sixty-three million, seven hundred seventy-three thousand, four hundred sixty-one".