163486481 has 4 divisors (see below), whose sum is σ = 163685952. Its totient is φ = 163287012.

The previous prime is 163486459. The next prime is 163486483. The reversal of 163486481 is 184684361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184684361 = 67 ⋅2756483.

It is a cyclic number.

It is not a de Polignac number, because 163486481 - 2⁶ = 163486417 is a prime.

It is a super-2 number, since 2×163486481² = 53455658939526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163486483) 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, 98501 + ... + 100146.

It is an arithmetic number, because the mean of its divisors is an integer number (40921488).

Almost surely, 2^163486481 is an apocalyptic number.

It is an amenable number.

163486481 is a deficient number, since it is larger than the sum of its proper divisors (199471).

163486481 is an equidigital number, since it uses as much as digits as its factorization.

163486481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199470.

The product of its digits is 110592, while the sum is 41.

The square root of 163486481 is about 12786.1832068839. The cubic root of 163486481 is about 546.7984589955.

The spelling of 163486481 in words is "one hundred sixty-three million, four hundred eighty-six thousand, four hundred eighty-one".