163898946407 has 8 divisors (see below), whose sum is σ = 187317916032. Its totient is φ = 140481185400.

The previous prime is 163898946373. The next prime is 163898946433. The reversal of 163898946407 is 704649898361.

163898946407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 163898946407 - 2³⁴ = 146719077223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163898946907) 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 7 ways as a sum of consecutive naturals, for example, 9932 + ... + 572622.

It is an arithmetic number, because the mean of its divisors is an integer number (23414739504).

Almost surely, 2^163898946407 is an apocalyptic number.

163898946407 is a deficient number, since it is larger than the sum of its proper divisors (23418969625).

163898946407 is an equidigital number, since it uses as much as digits as its factorization.

163898946407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604309.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 163898946407 in words is "one hundred sixty-three billion, eight hundred ninety-eight million, nine hundred forty-six thousand, four hundred seven".