398831306163 has 16 divisors (see below), whose sum is σ = 559901808000. Its totient is φ = 251831099520.

The previous prime is 398831306143. The next prime is 398831306171. The reversal of 398831306163 is 361603138893.

It is a happy number.

It is not a de Polignac number, because 398831306163 - 2²¹ = 398829209011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398831306123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633253 + ... + 1094838.

It is an arithmetic number, because the mean of its divisors is an integer number (34993863000).

Almost surely, 2^398831306163 is an apocalyptic number.

398831306163 is a deficient number, since it is larger than the sum of its proper divisors (161070501837).

398831306163 is a wasteful number, since it uses less digits than its factorization.

398831306163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732162.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 398831306163 in words is "three hundred ninety-eight billion, eight hundred thirty-one million, three hundred six thousand, one hundred sixty-three".