428621691189 has 16 divisors (see below), whose sum is σ = 571970891520. Its totient is φ = 285510240960.

The previous prime is 428621691187. The next prime is 428621691191. The reversal of 428621691189 is 981196126824.

It is an interprime number because it is at equal distance from previous prime (428621691187) and next prime (428621691191).

It is not a de Polignac number, because 428621691189 - 2¹ = 428621691187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428621691187) 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, 22959519 + ... + 22978179.

It is an arithmetic number, because the mean of its divisors is an integer number (35748180720).

Almost surely, 2^428621691189 is an apocalyptic number.

It is an amenable number.

428621691189 is a deficient number, since it is larger than the sum of its proper divisors (143349200331).

428621691189 is a wasteful number, since it uses less digits than its factorization.

428621691189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24620.

The product of its digits is 2985984, while the sum is 57.

The spelling of 428621691189 in words is "four hundred twenty-eight billion, six hundred twenty-one million, six hundred ninety-one thousand, one hundred eighty-nine".