428149446219 has 32 divisors (see below), whose sum is σ = 692028345600. Its totient is φ = 259458396480.

The previous prime is 428149446187. The next prime is 428149446233. The reversal of 428149446219 is 912644941824.

428149446219 is a `hidden beast` number, since 4 + 2 + 8 + 1 + 4 + 9 + 4 + 4 + 621 + 9 = 666.

It is not a de Polignac number, because 428149446219 - 2⁵ = 428149446187 is a prime.

It is a super-2 number, since 2×428149446219² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428149446269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3119332 + ... + 3253694.

It is an arithmetic number, because the mean of its divisors is an integer number (21625885800).

Almost surely, 2^428149446219 is an apocalyptic number.

428149446219 is a deficient number, since it is larger than the sum of its proper divisors (263878899381).

428149446219 is a wasteful number, since it uses less digits than its factorization.

428149446219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145112 (or 145106 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 428149446219 in words is "four hundred twenty-eight billion, one hundred forty-nine million, four hundred forty-six thousand, two hundred nineteen".