398127581822 has 16 divisors (see below), whose sum is σ = 599145792000. Its totient is φ = 198412620120.

The previous prime is 398127581801. The next prime is 398127581861. The reversal of 398127581822 is 228185721893.

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, 2640179 + ... + 2786897.

It is an arithmetic number, because the mean of its divisors is an integer number (37446612000).

Almost surely, 2^398127581822 is an apocalyptic number.

398127581822 is a deficient number, since it is larger than the sum of its proper divisors (201018210178).

398127581822 is a wasteful number, since it uses less digits than its factorization.

398127581822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151151.

The product of its digits is 3870720, while the sum is 56.

The spelling of 398127581822 in words is "three hundred ninety-eight billion, one hundred twenty-seven million, five hundred eighty-one thousand, eight hundred twenty-two".