163538351 has 4 divisors (see below), whose sum is σ = 173158272. Its totient is φ = 153918432.

The previous prime is 163538341. The next prime is 163538363. The reversal of 163538351 is 153835361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163538351 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 (163538341) 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, 4809935 + ... + 4809968.

It is an arithmetic number, because the mean of its divisors is an integer number (43289568).

Almost surely, 2^163538351 is an apocalyptic number.

163538351 is a deficient number, since it is larger than the sum of its proper divisors (9619921).

163538351 is an equidigital number, since it uses as much as digits as its factorization.

163538351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619920.

The product of its digits is 32400, while the sum is 35.

The square root of 163538351 is about 12788.2114073861. The cubic root of 163538351 is about 546.8562811813.

The spelling of 163538351 in words is "one hundred sixty-three million, five hundred thirty-eight thousand, three hundred fifty-one".