163309398 has 32 divisors (see below), whose sum is σ = 373890816. Its totient is φ = 46583328.

The previous prime is 163309387. The next prime is 163309403. The reversal of 163309398 is 893903361.

163309398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25840 + ... + 31532.

It is an arithmetic number, because the mean of its divisors is an integer number (11684088).

Almost surely, 2^163309398 is an apocalyptic number.

163309398 is an abundant number, since it is smaller than the sum of its proper divisors (210581418).

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

163309398 is a wasteful number, since it uses less digits than its factorization.

163309398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 163309398 is about 12779.2565511457. The cubic root of 163309398 is about 546.6009631690.

The spelling of 163309398 in words is "one hundred sixty-three million, three hundred nine thousand, three hundred ninety-eight".