428019292169 has 32 divisors (see below), whose sum is σ = 494921097216. Its totient is φ = 362582438400.

The previous prime is 428019292159. The next prime is 428019292193. The reversal of 428019292169 is 961292910824.

It is a de Polignac number, because none of the positive numbers 2^k-428019292169 is a prime.

It is a super-2 number, since 2×428019292169² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 428019292169.

It is not an unprimeable number, because it can be changed into a prime (428019292139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456797069 + ... + 456798005.

It is an arithmetic number, because the mean of its divisors is an integer number (15466284288).

Almost surely, 2^428019292169 is an apocalyptic number.

It is an amenable number.

428019292169 is a deficient number, since it is larger than the sum of its proper divisors (66901805047).

428019292169 is a wasteful number, since it uses less digits than its factorization.

428019292169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 428019292169 in words is "four hundred twenty-eight billion, nineteen million, two hundred ninety-two thousand, one hundred sixty-nine".