163983746 has 8 divisors (see below), whose sum is σ = 248739660. Its totient is φ = 81070528.

The previous prime is 163983739. The next prime is 163983763. The reversal of 163983746 is 647389361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 136305625 + 27678121 = 11675^2 + 5261^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 163983746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460451 + ... + 460806.

Almost surely, 2^163983746 is an apocalyptic number.

163983746 is a deficient number, since it is larger than the sum of its proper divisors (84755914).

163983746 is an equidigital number, since it uses as much as digits as its factorization.

163983746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921348.

The product of its digits is 653184, while the sum is 47.

The square root of 163983746 is about 12805.6138470594. The cubic root of 163983746 is about 547.3522836345.

The spelling of 163983746 in words is "one hundred sixty-three million, nine hundred eighty-three thousand, seven hundred forty-six".