163352491 has 4 divisors (see below), whose sum is σ = 163450672. Its totient is φ = 163254312.

The previous prime is 163352479. The next prime is 163352537. The reversal of 163352491 is 194253361.

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

It is a cyclic number.

It is not a de Polignac number, because 163352491 - 2⁵ = 163352459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163322491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46551 + ... + 49936.

It is an arithmetic number, because the mean of its divisors is an integer number (40862668).

Almost surely, 2^163352491 is an apocalyptic number.

163352491 is a deficient number, since it is larger than the sum of its proper divisors (98181).

163352491 is an equidigital number, since it uses as much as digits as its factorization.

163352491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98180.

The product of its digits is 19440, while the sum is 34.

The square root of 163352491 is about 12780.9424926333. The cubic root of 163352491 is about 546.6490367522.

The spelling of 163352491 in words is "one hundred sixty-three million, three hundred fifty-two thousand, four hundred ninety-one".