163389434 has 8 divisors (see below), whose sum is σ = 263936820. Its totient is φ = 75410496.

The previous prime is 163389433. The next prime is 163389463. The reversal of 163389434 is 434983361.

It can be written as a sum of positive squares in 2 ways, for example, as 161213809 + 2175625 = 12697^2 + 1475^2 .

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

It is a super-2 number, since 2×163389434² = 53392214285680712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163389391 and 163389400.

It is not an unprimeable number, because it can be changed into a prime (163389433) 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, 3142079 + ... + 3142130.

Almost surely, 2^163389434 is an apocalyptic number.

163389434 is a deficient number, since it is larger than the sum of its proper divisors (100547386).

163389434 is a wasteful number, since it uses less digits than its factorization.

163389434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284224.

The product of its digits is 186624, while the sum is 41.

The square root of 163389434 is about 12782.3876486359. The cubic root of 163389434 is about 546.6902428030.

The spelling of 163389434 in words is "one hundred sixty-three million, three hundred eighty-nine thousand, four hundred thirty-four".