163398691326 has 16 divisors (see below), whose sum is σ = 351935643024. Its totient is φ = 50276520384.

The previous prime is 163398691319. The next prime is 163398691333. The reversal of 163398691326 is 623196893361.

It is a happy number.

163398691326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163398691319) and next prime (163398691333).

It is a congruent number.

It is an unprimeable number.

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, 1047427431 + ... + 1047427586.

It is an arithmetic number, because the mean of its divisors is an integer number (21995977689).

Almost surely, 2^163398691326 is an apocalyptic number.

163398691326 is an abundant number, since it is smaller than the sum of its proper divisors (188536951698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163398691326 is a wasteful number, since it uses less digits than its factorization.

163398691326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094855035.

The product of its digits is 7558272, while the sum is 57.

The spelling of 163398691326 in words is "one hundred sixty-three billion, three hundred ninety-eight million, six hundred ninety-one thousand, three hundred twenty-six".