163236245 has 4 divisors (see below), whose sum is σ = 195883500. Its totient is φ = 130588992.

The previous prime is 163236233. The next prime is 163236247. The reversal of 163236245 is 542632361.

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 36493681 + 126742564 = 6041^2 + 11258^2 .

It is a cyclic number.

It is not a de Polignac number, because 163236245 - 2¹⁰ = 163235221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163236247) 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, 16323620 + ... + 16323629.

It is an arithmetic number, because the mean of its divisors is an integer number (48970875).

Almost surely, 2^163236245 is an apocalyptic number.

It is an amenable number.

163236245 is a deficient number, since it is larger than the sum of its proper divisors (32647255).

163236245 is an equidigital number, since it uses as much as digits as its factorization.

163236245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32647254.

The product of its digits is 25920, while the sum is 32.

The square root of 163236245 is about 12776.3940530965. The cubic root of 163236245 is about 546.5193359578.

The spelling of 163236245 in words is "one hundred sixty-three million, two hundred thirty-six thousand, two hundred forty-five".