163980634 has 8 divisors (see below), whose sum is σ = 248507028. Its totient is φ = 81144960.

The previous prime is 163980611. The next prime is 163980653. The reversal of 163980634 is 436089361.

It can be written as a sum of positive squares in 2 ways, for example, as 155875225 + 8105409 = 12485^2 + 2847^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422437 + ... + 422824.

Almost surely, 2^163980634 is an apocalyptic number.

163980634 is a deficient number, since it is larger than the sum of its proper divisors (84526394).

163980634 is an equidigital number, since it uses as much as digits as its factorization.

163980634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845360.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 163980634 is about 12805.4923372747. The cubic root of 163980634 is about 547.3488211550.

The spelling of 163980634 in words is "one hundred sixty-three million, nine hundred eighty thousand, six hundred thirty-four".