163505842 has 8 divisors (see below), whose sum is σ = 253170432. Its totient is φ = 79115700.

The previous prime is 163505831. The next prime is 163505851. The reversal of 163505842 is 248505361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 163505798 and 163505807.

It is an unprimeable number.

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, 1318534 + ... + 1318657.

It is an arithmetic number, because the mean of its divisors is an integer number (31646304).

Almost surely, 2^163505842 is an apocalyptic number.

163505842 is a deficient number, since it is larger than the sum of its proper divisors (89664590).

163505842 is a wasteful number, since it uses less digits than its factorization.

163505842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637224.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 163505842 is about 12786.9402907811. The cubic root of 163505842 is about 546.8200431392.

The spelling of 163505842 in words is "one hundred sixty-three million, five hundred five thousand, eight hundred forty-two".