163424641 has 4 divisors (see below), whose sum is σ = 165011392. Its totient is φ = 161837892.

The previous prime is 163424633. The next prime is 163424669. The reversal of 163424641 is 146424361.

163424641 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163424641 - 2³ = 163424633 is a prime.

It is a super-2 number, since 2×163424641² = 53415226571957762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163424441) 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, 793221 + ... + 793426.

It is an arithmetic number, because the mean of its divisors is an integer number (41252848).

Almost surely, 2^163424641 is an apocalyptic number.

It is an amenable number.

163424641 is a deficient number, since it is larger than the sum of its proper divisors (1586751).

163424641 is a wasteful number, since it uses less digits than its factorization.

163424641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586750.

The product of its digits is 13824, while the sum is 31.

The square root of 163424641 is about 12783.7647428291. The cubic root of 163424641 is about 546.7295067477.

The spelling of 163424641 in words is "one hundred sixty-three million, four hundred twenty-four thousand, six hundred forty-one".